Resolving the physics of quasar Ly α nebulae (RePhyNe): I. Constraining quasar host halo masses through circumgalactic medium kinematics
(2023)
Journal Article
de Beer, S., Cantalupo, S., Travascio, A., Pezzulli, G., Galbiati, M., Fossati, M., …Wang, W. (in press). Resolving the physics of quasar Ly α nebulae (RePhyNe): I. Constraining quasar host halo masses through circumgalactic medium kinematics. Monthly Notices of the Royal Astronomical Society, 526(2), 1850–1873. https://doi.org/10.1093/mnras/stad2682
Outputs (113)
Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: II. Constraints on the oxygen abundance and ionising radiation escape (2021)
Journal Article
Della Bruna, L., Adamo, A., Lee, J. C., Smith, L. J., Krumholz, M., Bik, A., …Wofford, A. (2021). Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: II. Constraints on the oxygen abundance and ionising radiation escape. Astronomy & Astrophysics, 650, Article A103. https://doi.org/10.1051/0004-6361/202039402Context. Feedback from massive stars affects the interstellar medium (ISM) from the immediate surroundings of the stars (parsec scales) to galactic (kiloparsec) scales. High-spatial resolution studies of H II regions are critical to investigate how t... Read More about Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: II. Constraints on the oxygen abundance and ionising radiation escape.
The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet (2021)
Journal Article
Beckett, A., Morris, S. L., Fumagalli, M., Bielby, R., Tejos, N., Schaye, J., …Cantalupo, S. (2021). The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet. Monthly Notices of the Royal Astronomical Society, 506(2), 2574-2602. https://doi.org/10.1093/mnras/stab1630We study the distribution and dynamics of the circumgalactic and intergalactic medium using a dense galaxy survey covering the field around the Q0107 system, a unique z ≈ 1 projected quasar triplet. With full Ly α coverage along all three lines-of-si... Read More about The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet.
Discovery of a Damped Lyα Galaxy at z ∼ 3 toward the Quasar SDSS J011852+040644 (2021)
Journal Article
Joshi, R., Fumagalli, M., Srianand, R., Noterdaeme, P., Petitjean, P., Rafelski, M., …Ho, L. C. (2021). Discovery of a Damped Lyα Galaxy at z ∼ 3 toward the Quasar SDSS J011852+040644. Astrophysical Journal, 908(2), Article 129. https://doi.org/10.3847/1538-4357/abd1d5We report the detection of the host galaxy of a damped Lyα system (DLA) with log N(H I) [cm−2 ] = 21.0 ± 0.10 at z ≈ 3.0091 toward the background quasar SDSS J011852+040644 using the Palomar Cosmic Web Imager at the Hale (P200) telescope. We detect L... Read More about Discovery of a Damped Lyα Galaxy at z ∼ 3 toward the Quasar SDSS J011852+040644.
Sub-damped Lyman α systems in the XQ-100 survey – II. Chemical evolution at 2.4 ≤ z ≤ 4.3 (2021)
Journal Article
Berg, T. A., Fumagalli, M., D’Odorico, V., Ellison, S. L., López, S., Becker, G. D., …Worseck, G. (2021). Sub-damped Lyman α systems in the XQ-100 survey – II. Chemical evolution at 2.4 ≤ z ≤ 4.3. Monthly Notices of the Royal Astronomical Society, 502(3), 4009-4025. https://doi.org/10.1093/mnras/stab184We present the measured gas-phase metal column densities in 155 sub-damped Ly α systems (subDLAs) with the aim to investigate the contribution of subDLAs to the chemical evolution of the Universe. The sample was identified within the absorber-blind X... Read More about Sub-damped Lyman α systems in the XQ-100 survey – II. Chemical evolution at 2.4 ≤ z ≤ 4.3.
The stochastic enrichment of Population II stars (2020)
Journal Article
Welsh, L., Cooke, R., & Fumagalli, M. (2021). The stochastic enrichment of Population II stars. Monthly Notices of the Royal Astronomical Society, 500(4), 5214-5228. https://doi.org/10.1093/mnras/staa3342We investigate the intrinsic scatter in the chemical abundances of a sample of metal-poor ([Fe/H] < −2.5) Milky Way halo stars. We draw our sample from four historic surveys and focus our attention on the stellar Mg, Ca, Ni, and Fe abundances. Using... Read More about The stochastic enrichment of Population II stars.
MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies (2020)
Journal Article
Dutta, R., Fumagalli, M., Fossati, M., Lofthouse, E. K., Prochaska, J. X., Battaia, F. A., …O’Meara, J. M. (2020). MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies. Monthly Notices of the Royal Astronomical Society, 499(4), 5022-5046. https://doi.org/10.1093/mnras/staa3147We present a study of the metal-enriched cool halo gas traced by Mg II absorption around 228 galaxies at z ∼ 0.8–1.5 within 28 quasar fields from the MUSE Analysis of Gas around Galaxies survey. We observe no significant evolution in the Mg II equiva... Read More about MUSE Analysis of Gas around Galaxies (MAGG) - II: Metal-enriched halo gas around z ∼ 1 galaxies.
Detecting neutral hydrogen at z ≳ 3 in large spectroscopic surveys of quasars (2020)
Journal Article
Fumagalli, M., Fotopoulou, S., & Thomson, L. (2020). Detecting neutral hydrogen at z ≳ 3 in large spectroscopic surveys of quasars. Monthly Notices of the Royal Astronomical Society, 498(2), 1951-1962. https://doi.org/10.1093/mnras/staa2388We present a pipeline based on a random forest classifier for the identification of high column density clouds of neutral hydrogen (i.e. the Lyman limit systems, LLSs) in absorption within large spectroscopic surveys of z ≳ 3 quasars. We test the per... Read More about Detecting neutral hydrogen at z ≳ 3 in large spectroscopic surveys of quasars.
Shaping the structure of a GMC with radiation and winds (2020)
Journal Article
Decataldo, D., Lupi, A., Ferrara, A., Pallottini, A., & Fumagalli, M. (2020). Shaping the structure of a GMC with radiation and winds. Monthly Notices of the Royal Astronomical Society, 497(4), 4718-4732. https://doi.org/10.1093/mnras/staa2326We study the effect of stellar feedback (photodissociation/ionization, radiation pressure and winds) on the evolution of a Giant Molecular Cloud (GMC), by means of a 3D radiative transfer, hydro-simulation implementing a complex chemical network feat... Read More about Shaping the structure of a GMC with radiation and winds.
Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2 (2020)
Journal Article
Stott, J., Bielby, R., Cullen, F., Burchett, J., Tejos, N., Fumagalli, M., …Prochaska, J. (2020). Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2. Monthly Notices of the Royal Astronomical Society, 497(3), 3083-3096. https://doi.org/10.1093/mnras/staa2096We demonstrate that the UV brightest quasars at z = 1–2 live in overdense environments. This is based on an analysis of deep Hubble Space Telescope WFC3 G141 grism spectroscopy of the galaxies along the lines-of-sight to UV luminous quasars in the re... Read More about Quasar Sightline and Galaxy Evolution (QSAGE) survey - II. Galaxy overdensities around UV luminous quasars at z = 1-2.
A limit on Planck-scale froth with ESPRESSO (2020)
Journal Article
Pettini, M., Fumagalli, M., Welsh, L., & Cooke, R. (2020). A limit on Planck-scale froth with ESPRESSO. Monthly Notices of the Royal Astronomical Society, 494(4), 4884-4890. https://doi.org/10.1093/mnras/staa440Some models of quantum gravity predict that the very structure of space–time is ‘frothy’ due to quantum fluctuations. Although the effect is expected to be tiny, if these space–time fluctuations grow over a large distance, the initial state of a phot... Read More about A limit on Planck-scale froth with ESPRESSO.
A bound on the 12C/13C ratio in near-pristine gas with ESPRESSO (2020)
Journal Article
Pettini, M., Fumagalli, M., Cooke, R., & Welsh, L. (2020). A bound on the 12C/13C ratio in near-pristine gas with ESPRESSO. Monthly Notices of the Royal Astronomical Society, 494(1), 1411-1423. https://doi.org/10.1093/mnras/staa807Using science verification observations obtained with ESPRESSO at the Very Large Telescope (VLT) in 4UT mode, we report the first bound on the carbon isotope ratio 12C/13C of a quiescent, near-pristine damped Lyα (DLA) system at z = 2.34. We infer a... Read More about A bound on the 12C/13C ratio in near-pristine gas with ESPRESSO.
Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: I. Data description and properties of the ionised gas (2020)
Journal Article
Della Bruna, L., Adamo, A., Bik, A., Fumagalli, M., Walterbos, R., Östlin, G., …Wofford, A. (2020). Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: I. Data description and properties of the ionised gas. Astronomy & Astrophysics, 635, Article A134. https://doi.org/10.1051/0004-6361/201937173Context. Studies of nearby galaxies reveal that around 50% of the total Hα luminosity in late-type spirals originates from diffuse ionised gas (DIG), which is a warm, diffuse component of the interstellar medium that can be associated with various me... Read More about Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE: I. Data description and properties of the ionised gas.
Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE (2020)
Journal Article
Bielby, R. M., Fumagalli, M., Fossati, M., Rafelski, M., Oppenheimer, B., Cantalupo, S., …Peroux, C. (2020). Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE. Monthly Notices of the Royal Astronomical Society, 493(4), 5336-5356. https://doi.org/10.1093/mnras/staa546We present a study of the galaxy environment of 9 strong H I+C IV absorption line systems (16.2 < log(N(HI)) < 21.2) spanning a wide range in metallicity at z ∼ 4 − 5, using MUSE integral field and X-Shooter spectroscopic data collected in a z ≈ 5.26... Read More about Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ∼ 4 − 5 with MUSE.
Interpreting Observations of Absorption Lines in the Circumgalactic Medium with a Turbulent Medium (2020)
Journal Article
Buie, E., Fumagalli, M., & Scannapieco, E. (2020). Interpreting Observations of Absorption Lines in the Circumgalactic Medium with a Turbulent Medium. Astrophysical Journal, 890(1), Article 33. https://doi.org/10.3847/1538-4357/ab65bcSingle-phase photoionization equilibrium (PIE) models are often used to infer the underlying physical properties of galaxy halos probed in absorption with ions at different ionization potentials. To incorporate the effects of turbulence, we use the M... Read More about Interpreting Observations of Absorption Lines in the Circumgalactic Medium with a Turbulent Medium.
Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes (2019)
Journal Article
Sykes, C., Fumagalli, M., Cooke, R., & Theuns, T. (2020). Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes. Monthly Notices of the Royal Astronomical Society, 492(2), 2151-2160. https://doi.org/10.1093/mnras/stz3573Observational measures of the primordial helium mass fraction, YP, are of interest for cosmology and fundamental particle physics. Current measures obtained from HII HII regions agree with the Standard Model prediction to approximately 1% precision,... Read More about Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes.
MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5 (2019)
Journal Article
Lofthouse, E. K., Fumagalli, M., Fossati, M., O’Meara, J. M., Murphy, M. T., Christensen, L., …Morris, S. L. (2020). MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5. Monthly Notices of the Royal Astronomical Society, 491(2), 2057-2074. https://doi.org/10.1093/mnras/stz3066We present the design, methods, and first results of the MUSE Analysis of Gas around Galaxies (MAGG) survey, a large programme on the Multi Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope (VLT) which targets 28 z > 3.2 quasa... Read More about MUSE Analysis of Gas around Galaxies (MAGG) - I: Survey design and the environment of a near pristine gas cloud at z ≈ 3.5.
The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5 (2019)
Journal Article
Fossati, M., Fumagalli, M., Lofthouse, E., D’Odorico, V., Lusso, E., Cantalupo, S., …Theuns, T. (2019). The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5. Monthly Notices of the Royal Astronomical Society, 490(1), 1451-1469. https://doi.org/10.1093/mnras/stz2693We present the goals, design, and first results of the MUSE Ultra Deep Field (MUDF) survey, a large programme using the Multi Unit Spectroscopic Explorer (MUSE) instrument at the ESO Very Large Telescope. The MUDF survey is collecting ≈150 h on-sourc... Read More about The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5.
Gas filaments of the cosmic web located around active galaxies in a protocluster (2019)
Journal Article
Umehata, H., Fumagalli, M., Smail, I., Matsuda, Y., Swinbank, A., Cantalupo, S., …Kohno, K. (2019). Gas filaments of the cosmic web located around active galaxies in a protocluster. Science, 366(6461), 97-100. https://doi.org/10.1126/science.aaw5949Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from these filaments has limited tests of this prediction. We report the de... Read More about Gas filaments of the cosmic web located around active galaxies in a protocluster.
The Evolution of O i over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium (2019)
Journal Article
Becker, G. D., Pettini, M., Rafelski, M., D’Odorico, V., Boera, E., Christensen, L., …Worseck, G. (2019). The Evolution of O i over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium. Astrophysical Journal, 883(2), Article 163. https://doi.org/10.3847/1538-4357/ab3eb5We present a survey for metal absorption systems traced by neutral oxygen over 3.2 < z < 6.5. Our survey uses Keck/ESI and VLT/X-Shooter spectra of 199 QSOs with redshifts up to 6.6. In total, we detect 74 O i absorbers, of which 57 are separated fro... Read More about The Evolution of O i over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium.
ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy (2019)
Journal Article
Jáchym, P., Kenney, J. D., Sun, M., Combes, F., Cortese, L., Scott, T. C., …Fumagalli, M. (2019). ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy. Astrophysical Journal, 883(2), Article 145. https://doi.org/10.3847/1538-4357/ab3e6cWe present the first high-resolution map of the cold molecular gas distribution as traced by CO(2−1) emission with ALMA in a long ram pressure stripped tail. The Norma cluster galaxy ESO 137-001 is undergoing a strong interaction with the surrounding... Read More about ALMA Unveils Widespread Molecular Gas Clumps in the Ram Pressure Stripped Tail of the Norma Jellyfish Galaxy.
Thirsty galaxies thriving on gas streams (2019)
Journal Article
Fumagalli, M. (2019). Thirsty galaxies thriving on gas streams. Nature Astronomy, 3, 796-797. https://doi.org/10.1038/s41550-019-0812-1Young galaxies are most effective at converting gas into stars. Intense accretion of fuel is required to keep galaxies growing, but these gas streams have largely eluded observations. New instruments at optical telescopes are now uncovering clues of... Read More about Thirsty galaxies thriving on gas streams.
Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3 (2019)
Journal Article
Mackenzie, R., Fumagalli, M., Theuns, T., Hatton, D. J., Garel, T., Cantalupo, S., …Trayford, J. (2019). Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3. Monthly Notices of the Royal Astronomical Society, 487(4), 5070-5096. https://doi.org/10.1093/mnras/stz1501We present results from a survey of galaxies in the elds of six z 3 Damped Lyman systems (DLAs) using the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope (VLT). We report a high detection rate of up to 80% of galaxies within 1000... Read More about Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3.
Modelling the chemical enrichment of Population III supernovae: The origin of the metals in near-pristine gas clouds (2019)
Journal Article
Welsh, L., Cooke, R., & Fumagalli, M. (2019). Modelling the chemical enrichment of Population III supernovae: The origin of the metals in near-pristine gas clouds. Monthly Notices of the Royal Astronomical Society, 487(3), 3363-3376. https://doi.org/10.1093/mnras/stz1526The most metal-poor, high redshift damped Lyman-α systems (DLAs) provide a window to study some of the first few generations of stars. In this paper, we present a novel model to investigate the chemical enrichment of the near-pristine DLA population.... Read More about Modelling the chemical enrichment of Population III supernovae: The origin of the metals in near-pristine gas clouds.
Fluorescent rings in star-free dark matter haloes (2019)
Journal Article
Sykes, C., Fumagalli, M., Cooke, R., Theuns, T., & Benítez–Llambay, A. (2019). Fluorescent rings in star-free dark matter haloes. Monthly Notices of the Royal Astronomical Society, 487(1), 609-621. https://doi.org/10.1093/mnras/stz1234Photoheating of the gas in low-mass dark matter (DM) haloes prevents baryons from cooling, leaving the haloes free of stars. Gas in these ‘dark’ haloes remains exposed to the ultraviolet background (UVB), and so is expected to emit via fluorescent re... Read More about Fluorescent rings in star-free dark matter haloes.
The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair (2019)
Journal Article
Lusso, E., Fumagalli, M., Fossati, M., Mackenzie, R., Bielby, R., Battaia, F. A., …Theuns, T. (2019). The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair. Monthly Notices of the Royal Astronomical Society: Letters, 485(1), L62-L67. https://doi.org/10.1093/mnrasl/slz032We present first results from Multi Unit Spectroscopic Explorer (MUSE) observations at the Very Large Telescope in the MUSE Ultra Deep Field (MUDF), a ≈1.2 × 1.4 arcmin2 region for which we are collecting ≈200 hours of integral field spectroscopy. Th... Read More about The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair.
Star cluster catalogues for the LEGUS dwarf galaxies (2019)
Journal Article
Cook, D., Lee, J., Adamo, A., Kim, H., Chandar, R., Whitmore, B., …Wofford, A. (2019). Star cluster catalogues for the LEGUS dwarf galaxies. Monthly Notices of the Royal Astronomical Society, 484(4), 4897-4919. https://doi.org/10.1093/mnras/stz331We present the star cluster catalogues for 17 dwarf and irregular galaxies in the HST Treasury Program ‘Legacy ExtraGalactic UV Survey’ (LEGUS). Cluster identification and photometry in this sub-sample are similar to that of the entire LEGUS sample,... Read More about Star cluster catalogues for the LEGUS dwarf galaxies.
MUSE sneaks a peek at extreme ram-pressure stripping events – IV. Hydrodynamic and gravitational interactions in the Blue Infalling Group (2019)
Journal Article
Fossati, M., Fumagalli, M., Gavazzi, G., Consolandi, G., Boselli, A., Yagi, M., …Wilman, D. J. (2019). MUSE sneaks a peek at extreme ram-pressure stripping events – IV. Hydrodynamic and gravitational interactions in the Blue Infalling Group. Monthly Notices of the Royal Astronomical Society, 484(2), 2212-2228. https://doi.org/10.1093/mnras/stz136We report new wide-field (≈4 × 4 arcmin2) Multi Unit Spectroscopic Explorer (MUSE) observations of the Blue Infalling Group (BIG), a compact group of galaxies located at a projected distance of ≃150 kpc from the X-ray centre of the A1367 cluster at z... Read More about MUSE sneaks a peek at extreme ram-pressure stripping events – IV. Hydrodynamic and gravitational interactions in the Blue Infalling Group.
Spectroscopic Redshift of the Gamma-Ray Blazar B2 1215+30 from Lyα Emission (2019)
Journal Article
Furniss, A., Worseck, G., Fumagalli, M., Johnson, C., Williams, D., Pontrelli, P., & Prochaska, J. (2019). Spectroscopic Redshift of the Gamma-Ray Blazar B2 1215+30 from Lyα Emission. Astronomical Journal, 157(2), Article 41. https://doi.org/10.3847/1538-3881/aaf28bWe report on Cosmic Origin Spectrograph observations of the gamma-ray bright blazar B2 1215+30, collected in 2015 November. These observations allow for the confirmation of the source redshift from the detection of a Lyα emission feature at λ ~ 1374... Read More about Spectroscopic Redshift of the Gamma-Ray Blazar B2 1215+30 from Lyα Emission.
Overdensity of submillimeter galaxies around the z ≃ 2.3 MAMMOTH-1 nebula (2018)
Journal Article
Arrigoni Battaia, F., Chen, C., Fumagalli, M., Cai, Z., Calistro Rivera, G., Xu, J., …De Breuck, C. (2018). Overdensity of submillimeter galaxies around the z ≃ 2.3 MAMMOTH-1 nebula. Astronomy & Astrophysics, 620, Article A202. https://doi.org/10.1051/0004-6361/201834195In the hierarchical model of structure formation, giant elliptical galaxies form through merging processes within the highest density peaks known as protoclusters. While high-redshift radio galaxies usually pinpoint the location of these environments... Read More about Overdensity of submillimeter galaxies around the z ≃ 2.3 MAMMOTH-1 nebula.
The spatial relation between young star clusters and molecular clouds in M51 with LEGUS (2018)
Journal Article
Grasha, K., Calzetti, D., Adamo, A., Kennicutt, R., Elmegreen, B., Messa, M., …Meidt, S. (2019). The spatial relation between young star clusters and molecular clouds in M51 with LEGUS. Monthly Notices of the Royal Astronomical Society, 483(4), 4707-4723. https://doi.org/10.1093/mnras/sty3424We present a study correlating the spatial locations of young star clusters with those of molecular clouds in NGC 5194, in order to investigate the time-scale over which clusters separate from their birth clouds. The star cluster catalogues are from... Read More about The spatial relation between young star clusters and molecular clouds in M51 with LEGUS.
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE): IV. a tail of ionised gas in the merger remnant NGC4424 (2018)
Journal Article
Boselli, A., Fossati, M., Consolandi, G., Amram, P., Ge, C., Sun, M., …Vollmer, B. (2018). A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE): IV. a tail of ionised gas in the merger remnant NGC4424. Astronomy & Astrophysics, 620, Article A164. https://doi.org/10.1051/0004-6361/201833914We observed the late-type peculiar galaxy NGC 4424 during the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Hα+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the Canada-French-Hawaii Telesco... Read More about A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE): IV. a tail of ionised gas in the merger remnant NGC4424.
The core of the massive cluster merger MACS J0417.5-1154 as seen by VLT/MUSE (2018)
Journal Article
Jauzac, M., Mahler, G., Edge, A. C., Sharon, K., Gillman, S., Ebeling, H., …Salomé, P. (2018). The core of the massive cluster merger MACS J0417.5-1154 as seen by VLT/MUSE. Monthly Notices of the Royal Astronomical Society, 483(3), 3082-3097. https://doi.org/10.1093/mnras/sty3312We present a multiwavelength analysis of the core of the massive galaxy cluster MACS J0417.5−1154 (z = 0.441). Our analysis takes advantage of Very Large Telescope/Multi-Unit Spectroscopic Explorer observations which allow the spectroscopic confirma... Read More about The core of the massive cluster merger MACS J0417.5-1154 as seen by VLT/MUSE.
Exploring the origins of a new, apparently metal-free gas cloud at z = 4.4 (2018)
Journal Article
Robert, P. F., Murphy, M. T., O’Meara, J. M., Crighton, N. H., & Fumagalli, M. (2019). Exploring the origins of a new, apparently metal-free gas cloud at z = 4.4. Monthly Notices of the Royal Astronomical Society, 483(2), 2736-2747. https://doi.org/10.1093/mnras/sty3287We report the discovery and analysis of only the third Lyman-limit system in which a high-quality resolution, echelle spectrum reveals no metal absorption lines, implying a metallicity ≲1/10 000 solar. Our HIRES spectrum of the background quasar, PSS... Read More about Exploring the origins of a new, apparently metal-free gas cloud at z = 4.4.
Dissecting cold gas in a high-redshift galaxy using a lensed background quasar (2018)
Journal Article
Krogager, J., Noterdaeme, P., O’Meara, J., Fumagalli, M., Fynbo, J., Prochaska, J., …Boissé, P. (2018). Dissecting cold gas in a high-redshift galaxy using a lensed background quasar. Astronomy & Astrophysics, 619, Article A142. https://doi.org/10.1051/0004-6361/201833608We present a study of cold gas absorption from a damped Lyman-α absorber (DLA) at redshift zabs = 1.946 toward two lensed images of the quasar J144254.78+405535.5 at redshift zQSO = 2.590. The physical separation of the two lines of sight at the abso... Read More about Dissecting cold gas in a high-redshift galaxy using a lensed background quasar.
MCMC determination of the cosmic UV background at z ≃ 0 from Hα fluorescence (2018)
Journal Article
Caruso, D., Haardt, F., Fumagalli, M., & Cantalupo, S. (2019). MCMC determination of the cosmic UV background at z ≃ 0 from Hα fluorescence. Monthly Notices of the Royal Astronomical Society, 482(2), 2833-2837. https://doi.org/10.1093/mnras/sty2956In a recent paper we reported on the detection of a diffuse H α glow in the outskirts of the nearby, edge-on disc galaxy UGC 7321 observed with the Multi-Unit Spectroscopic Explorer (MUSE) at the ESO Very Large Telescope. By interpreting the H α emis... Read More about MCMC determination of the cosmic UV background at z ≃ 0 from Hα fluorescence.
SLUG IV: A Novel Forward-Modelling Method to Derive the Demographics of Star Clusters (2018)
Journal Article
Krumholz, M., Adamo, A., Fumagalli, M., & Calzetti, D. (2019). SLUG IV: A Novel Forward-Modelling Method to Derive the Demographics of Star Clusters. Monthly Notices of the Royal Astronomical Society, 482(3), 3550-3566. https://doi.org/10.1093/mnras/sty2896We describe a novel method for determining the demographics of a population of star clusters, for example distributions of cluster mass and age, from unresolved photometry. This method has a number of desirable properties: it fully exploits all the i... Read More about SLUG IV: A Novel Forward-Modelling Method to Derive the Demographics of Star Clusters.
Measurement of the primordial helium abundance from the intergalactic medium (2018)
Journal Article
Cooke, R., & Fumagalli, M. (2018). Measurement of the primordial helium abundance from the intergalactic medium. Nature Astronomy, 2(12), 957-961. https://doi.org/10.1038/s41550-018-0584-zAlmost every helium atom in the Universe was created just a few minutes after the Big Bang through a process commonly referred to as Big Bang nucleosynthesis1,2. The amount of helium that was made during Big Bang nucleosynthesis is determined by comb... Read More about Measurement of the primordial helium abundance from the intergalactic medium.
Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS (2018)
Journal Article
Grasha, K., Calzetti, D., Bittle, L., Johnson, K., Meyer, J., Kennicutt, R., …Smith, L. (2018). Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS. Monthly Notices of the Royal Astronomical Society, 481(1), 1016-1027. https://doi.org/10.1093/mnras/sty2154We present an investigation of the relationship between giant molecular cloud (GMC) properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793. We combine the star cluster catalogue from the HST LEGUS (Legacy ExtraGalacti... Read More about Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS.
Theoretical predictions for IMF diagnostics in UV spectroscopy of star clusters (2018)
Journal Article
Ashworth, G., Fumagalli, M., Adamo, A., & Krumholz, M. R. (2018). Theoretical predictions for IMF diagnostics in UV spectroscopy of star clusters. Monthly Notices of the Royal Astronomical Society, 480(3), 3091-3104. https://doi.org/10.1093/mnras/sty2058We explore the possibility of using UV spectroscopy in combination with broad-band photometry as diagnostic tools for understanding the shape of the initial mass function (IMF) in unresolved stellar populations. Building on our previous work, we exte... Read More about Theoretical predictions for IMF diagnostics in UV spectroscopy of star clusters.
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). III. Star formation in the stripped gas of NGC 4254 (2018)
Journal Article
Boselli, A., Fossati, M., Cuillandre, J., Boissier, S., Boquien, M., Buat, V., …Zavagno, A. (2018). A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). III. Star formation in the stripped gas of NGC 4254. Astronomy & Astrophysics, 615, Article A114. https://doi.org/10.1051/0004-6361/201732410During pilot observations of the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Hα + [NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we have observed the spiral galaxy NGC 4254 (M99)... Read More about A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE). III. Star formation in the stripped gas of NGC 4254.
A Comparison of Young Star Properties with Local Galactic Environment for LEGUS/LITTLE THINGS Dwarf Irregular Galaxies (2018)
Journal Article
Hunter, D. A., Adamo, A., Elmegreen, B. G., Gallardo, S., Lee, J. C., Cook, D. O., …Johnson, K. E. (2018). A Comparison of Young Star Properties with Local Galactic Environment for LEGUS/LITTLE THINGS Dwarf Irregular Galaxies. Astronomical Journal, 156(1), Article 21. https://doi.org/10.3847/1538-3881/aac50eWe have explored the role environmental factors play in determining characteristics of young stellar objects in nearby dwarf irregular and blue compact dwarf galaxies. Star clusters are characterized by concentrations, masses, and formation rates; OB... Read More about A Comparison of Young Star Properties with Local Galactic Environment for LEGUS/LITTLE THINGS Dwarf Irregular Galaxies.
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) I. Introduction to the survey★ (2018)
Journal Article
Boselli, A., Fossati, M., Ferrarese, L., Boissier, S., Consolandi, G., Longobardi, A., …Withington, K. (2018). A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) I. Introduction to the survey★. Astronomy & Astrophysics, 614, Article A56. https://doi.org/10.1051/0004-6361/201732407The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band (NB) Hα+[NII] imaging survey carried out with MegaCam at the Canada–France–Hawaii Telescope. The survey covers the whole Virgo cluster region from its core t... Read More about A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) I. Introduction to the survey★.
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) II. Constraining the quenching time in the stripped galaxy NGC 4330 (2018)
Journal Article
Fossati, M., Mendel, J., Boselli, A., Cuillandre, J., Vollmer, B., Boissier, S., …Toloba, E. (2018). A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) II. Constraining the quenching time in the stripped galaxy NGC 4330. Astronomy & Astrophysics, 614, Article A57. https://doi.org/10.1051/0004-6361/201732373The Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) is a blind narrow-band Hα + [NII] imaging survey carried out with MegaCam at the Canada-France-Hawaii Telescope. During pilot observations taken in the spring of 2016 we observed N... Read More about A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE) II. Constraining the quenching time in the stripped galaxy NGC 4330.
The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs (2018)
Journal Article
Lusso, E., Fumagalli, M., Rafelski, M., Neeleman, M., Prochaska, J. X., Hennawi, J. F., …Theuns, T. (2018). The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs. Astrophysical Journal, 860(1), Article 41. https://doi.org/10.3847/1538-4357/aac514We present the first results from our survey of intervening and proximate Lyman limit systems (LLSs) at z ~ 2.0–2.5 using the Wide Field Camera 3 on board the Hubble Space Telescope. The quasars in our sample are projected pairs with proper transvers... Read More about The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs.
Quasars Probing Quasars. X. The Quasar Pair Spectral Database (2018)
Journal Article
Findlay, J. R., Prochaska, J. X., Hennawi, J. F., Fumagalli, M., Myers, A. D., Bartle, S., …Rubin, K. H. (2018). Quasars Probing Quasars. X. The Quasar Pair Spectral Database. Astrophysical Journal Supplement, 236(2), Article 44. https://doi.org/10.3847/1538-4365/aabee5The rare close projection of two quasars on the sky provides the opportunity to study the host galaxy environment of a foreground quasar in absorption against the continuum emission of a background quasar. For over a decade the "Quasars probing quasa... Read More about Quasars Probing Quasars. X. The Quasar Pair Spectral Database.
The young star cluster population of M51 with LEGUS - II. Testing environmental dependencies (2018)
Journal Article
Messa, M., Adamo, A., Calzetti, D., Reina-Campos, M., Colombo, D., Schinnerer, E., …Whitmore, B. (2018). The young star cluster population of M51 with LEGUS - II. Testing environmental dependencies. Monthly Notices of the Royal Astronomical Society, 477(2), 1683-1707. https://doi.org/10.1093/mnras/sty577It has recently been established that the properties of young star clusters (YSCs) can vary as a function of the galactic environment in which they are found. We use the cluster catalogue produced by the Legacy Extragalactic UV Survey (LEGUS) collabo... Read More about The young star cluster population of M51 with LEGUS - II. Testing environmental dependencies.
Hα imaging observations of early-type galaxies from the ATLAS3D survey (2018)
Journal Article
Gavazzi, G., Consolandi, G., Pedraglio, S., Fossati, M., Fumagalli, M., & Boselli, A. (2018). Hα imaging observations of early-type galaxies from the ATLAS3D survey. Astronomy & Astrophysics, 611, Article A28. https://doi.org/10.1051/0004-6361/201731074Context. The traditional knowledge of the mechanisms that brought to the formation and evolution of early type galaxies (ETG) in a hierarchical Universe was challenged by the unexpected finding by ATLAS3D that 86% ETGs show signs of a fast rotating d... Read More about Hα imaging observations of early-type galaxies from the ATLAS3D survey.
Two more, bright, z > 6 quasars from VST ATLAS and WISE (2018)
Journal Article
Chehade, B., Carnall, A., Shanks, T., Diener, C., Fumagalli, M., Findlay, J., …Gonzalez-Solares, E. (2018). Two more, bright, z > 6 quasars from VST ATLAS and WISE. Monthly Notices of the Royal Astronomical Society, 478(2), 1649-1659. https://doi.org/10.1093/mnras/sty690Recently, Carnall et al. discovered two bright high redshift quasars using the combination of the VST ATLAS and WISE surveys. The technique involved using the 3-D colour plane i − z: z − W1: W1 − W2 with the WISE W1(3.4 micron) and W2 (4.5 micron) ba... Read More about Two more, bright, z > 6 quasars from VST ATLAS and WISE.
Extinction Maps and Dust-to-gas Ratios in Nearby Galaxies with LEGUS (2018)
Journal Article
Kahre, L., Walterbos, R., Kim, H., Thilker, D., Calzetti, D., Lee, J., …Wofford, A. (2018). Extinction Maps and Dust-to-gas Ratios in Nearby Galaxies with LEGUS. Astrophysical Journal, 855(2), Article 133. https://doi.org/10.3847/1538-4357/aab101We present a study of the dust-to-gas ratios in five nearby galaxies: NGC 628 (M74), NGC 6503, NGC 7793, UGC 5139 (Holmberg I), and UGC 4305 (Holmberg II). Using Hubble Space Telescope broadband WFC3/UVIS UV and optical images from the Treasury progr... Read More about Extinction Maps and Dust-to-gas Ratios in Nearby Galaxies with LEGUS.
The Resolved Stellar Populations in the LEGUS Galaxies1 (2018)
Journal Article
Sabbi, E., Calzetti, D., Ubeda, L., Adamo, A., Cignoni, M., Thilker, D., …Wofford, A. (2018). The Resolved Stellar Populations in the LEGUS Galaxies1. Astrophysical Journal Supplement, 235(1), Article 23. https://doi.org/10.3847/1538-4365/aaa8e5The Legacy ExtraGalactic UV Survey (LEGUS) is a multiwavelength Cycle 21 Treasury program on the Hubble Space Telescope. It studied 50 nearby star-forming galaxies in 5 bands from the near-UV to the I-band, combining new Wide Field Camera 3 observati... Read More about The Resolved Stellar Populations in the LEGUS Galaxies1.
A Study of Two Dwarf Irregular Galaxies with Asymmetrical Star Formation Distributions (2018)
Journal Article
Hunter, D. A., Gallardo, S., Zhang, H., Adamo, A., Cook, D. O., Oh, S., …Lee, J. C. (2018). A Study of Two Dwarf Irregular Galaxies with Asymmetrical Star Formation Distributions. Astrophysical Journal, 855(1), Article 7. https://doi.org/10.3847/1538-4357/aaa964Two dwarf irregular galaxies, DDO 187 and NGC 3738, exhibit a striking pattern of star formation: intense star formation is taking place in a large region occupying roughly half of the inner part of the optical galaxy. We use data on the H i distribu... Read More about A Study of Two Dwarf Irregular Galaxies with Asymmetrical Star Formation Distributions.
MUSE sneaks a peek at extreme ram-pressure events - III. Tomography of UGC 6697, a massive galaxy falling into Abell 1367 (2017)
Journal Article
Consolandi, G., Gavazzi, G., Fossati, M., Fumagalli, M., Boselli, A., Yagi, M., & Yoshida, M. (2017). MUSE sneaks a peek at extreme ram-pressure events - III. Tomography of UGC 6697, a massive galaxy falling into Abell 1367. Astronomy & Astrophysics, 606, Article A83. https://doi.org/10.1051/0004-6361/201731218We present the MUSE observations of UGC 6697, a giant (M∗ ≈ 1010M⊙) spiral galaxy infalling in the nearby cluster Abell 1367. During its high-velocity transit through the intracluster medium (ICM), the hydrodynamical interactions with the ICM produce... Read More about MUSE sneaks a peek at extreme ram-pressure events - III. Tomography of UGC 6697, a massive galaxy falling into Abell 1367.
The young star cluster population of M51 with LEGUS – I. A comprehensive study of cluster formation and evolution (2017)
Journal Article
Messa, M., Adamo, A., Östlin, G., Calzetti, D., Grasha, K., Grebel, E., …Weber, M. (2018). The young star cluster population of M51 with LEGUS – I. A comprehensive study of cluster formation and evolution. Monthly Notices of the Royal Astronomical Society, 473(1), 996-1018. https://doi.org/10.1093/mnras/stx2403Recently acquired WFC3 UV (F275W and F336W) imaging mosaics under the Legacy Extragalactic UV Survey (LEGUS), combined with archival ACS data of M51, are used to study the young star cluster (YSC) population of this interacting system. Our newly extr... Read More about The young star cluster population of M51 with LEGUS – I. A comprehensive study of cluster formation and evolution.
Hierarchical Star Formation in Turbulent Media: Evidence from Young Star Clusters (2017)
Journal Article
Grasha, K., Elmegreen, B., Calzetti, D., Adamo, A., Aloisi, A., Bright, S., …Ubeda, L. (2017). Hierarchical Star Formation in Turbulent Media: Evidence from Young Star Clusters. Astrophysical Journal, 842(1), Article 25. https://doi.org/10.3847/1538-4357/aa740bWe present an analysis of the positions and ages of young star clusters in eight local galaxies to investigate the connection between the age difference and separation of cluster pairs. We find that star clusters do not form uniformly but instead are... Read More about Hierarchical Star Formation in Turbulent Media: Evidence from Young Star Clusters.
Legacy ExtraGalactic UV Survey with The Hubble Space Telescope: Stellar Cluster Catalogs and First Insights Into Cluster Formation and Evolution in NGC 628 (2017)
Journal Article
Adamo, A., Ryon, J., Messa, M., Kim, H., Grasha, K., Cook, D., …Zackrisson, E. (2017). Legacy ExtraGalactic UV Survey with The Hubble Space Telescope: Stellar Cluster Catalogs and First Insights Into Cluster Formation and Evolution in NGC 628. Astrophysical Journal, 841(2), Article 131. https://doi.org/10.3847/1538-4357/aa7132We report the large effort that is producing comprehensive high-level young star cluster (YSC) catalogs for a significant fraction of galaxies observed with the Legacy ExtraGalactic UV Survey (LEGUS) Hubble treasury program. We present the methodolog... Read More about Legacy ExtraGalactic UV Survey with The Hubble Space Telescope: Stellar Cluster Catalogs and First Insights Into Cluster Formation and Evolution in NGC 628.
Effective Radii of Young, Massive Star Clusters in Two LEGUS Galaxies (2017)
Journal Article
Ryon, J., Gallagher, J., Smith, L., Adamo, A., Calzetti, D., Bright, S., …Ubeda, L. (2017). Effective Radii of Young, Massive Star Clusters in Two LEGUS Galaxies. Astrophysical Journal, 841(2), Article 92. https://doi.org/10.3847/1538-4357/aa719eWe present a study of the effective (half-light) radii and other structural properties of a systematically selected sample of young, massive star clusters (≥5 × 103 ${M}_{\odot }$ and ≤200 Myr) in two nearby spiral galaxies, NGC 628 and NGC 1313. We... Read More about Effective Radii of Young, Massive Star Clusters in Two LEGUS Galaxies.
The Hierarchical Distribution of the Young Stellar Clusters in Six Local Star-forming Galaxies (2017)
Journal Article
Grasha, K., Calzetti, D., Adamo, A., Kim, H., Elmegreen, B., Gouliermis, D., …Ubeda, L. (2017). The Hierarchical Distribution of the Young Stellar Clusters in Six Local Star-forming Galaxies. Astrophysical Journal, 840(2), Article 113. https://doi.org/10.3847/1538-4357/aa6f15We present a study of the hierarchical clustering of the young stellar clusters in six local (3–15 Mpc) star-forming galaxies using Hubble Space Telescope broadband WFC3/UVIS UV and optical images from the Treasury Program LEGUS (Legacy ExtraGalactic... Read More about The Hierarchical Distribution of the Young Stellar Clusters in Six Local Star-forming Galaxies.
Exploring the IMF of star clusters: a joint SLUG and LEGUS effort (2017)
Journal Article
Ashworth, G., Fumagalli, M., Krumholz, M., Adamo, A., Calzetti, D., Chandar, R., …Wofford, A. (2017). Exploring the IMF of star clusters: a joint SLUG and LEGUS effort. Monthly Notices of the Royal Astronomical Society, 469(2), 2464-2480. https://doi.org/10.1093/mnras/stx935We present the implementation of a Bayesian formalism within the Stochastically Lighting Up Galaxies (SLUG) stellar population synthesis code, which is designed to investigate variations in the initial mass function (IMF) of star clusters. By compari... Read More about Exploring the IMF of star clusters: a joint SLUG and LEGUS effort.
The COS-Halos Survey: Metallicities in the Low-redshift Circumgalactic Medium (2017)
Journal Article
Prochaska, J. X., Werk, J. K., Worseck, G., Tripp, T. M., Tumlinson, J., Burchett, J. N., …Tejos, N. (2017). The COS-Halos Survey: Metallicities in the Low-redshift Circumgalactic Medium. Astrophysical Journal, 837(2), Article 169. https://doi.org/10.3847/1538-4357/aa6007We analyze new far-ultraviolet spectra of 13 quasars from the z~0.2 COS-Halos survey that cover the HI Lyman limit of 14 circumgalactic medium (CGM) systems. These data yield precise estimates or more constraining limits than previous COS-Halos measu... Read More about The COS-Halos Survey: Metallicities in the Low-redshift Circumgalactic Medium.
Probing the intra-group medium of a z = 0.28 galaxy group (2017)
Journal Article
Bielby, R., Crighton, N., Fumagalli, M., Morris, S., Stott, J., Tejos, N., & Cantalupo, S. (2017). Probing the intra-group medium of a z = 0.28 galaxy group. Monthly Notices of the Royal Astronomical Society, 468(2), 1373-1386. https://doi.org/10.1093/mnras/stx528We present new MUSE observations of a galaxy group probed by a background quasar. The quasar sightline passes between multiple z = 0.28 galaxies, whilst showing at the same redshift low-ionized metal line species, including Ca ii, Mg i, Mg ii and Fe ... Read More about Probing the intra-group medium of a z = 0.28 galaxy group.
A measurement of the z = 0 UV background from Halpha fluorescence (2017)
Journal Article
Fumagalli, M., Haardt, F., Theuns, T., Morris, S. L., Cantalupo, S., Madau, P., & Fossati, M. (2017). A measurement of the z = 0 UV background from Halpha fluorescence. Monthly Notices of the Royal Astronomical Society, 467(4), 4802-4816. https://doi.org/10.1093/mnras/stx398We report the detection of extended Halpha emission from the tip of the HI disk of the nearby edge-on galaxy UGC 7321, observed with the Multi Unit Spectroscopic Explorer (MUSE) instrument at the Very Large Telescope. The Halpha surface brightness fa... Read More about A measurement of the z = 0 UV background from Halpha fluorescence.
Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7 (2017)
Journal Article
Swinbank, M., Harrison, C., Trayford, J., Schaller, M., Smail, I., Schaye, J., …Stott, J. (2017). Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7. Monthly Notices of the Royal Astronomical Society, 467(3), 3140-3159. https://doi.org/10.1093/mnras/stx201We present a MUSE and KMOS dynamical study 405 star-forming galaxies at redshift z = 0.28–1.65 (median redshift z¯= 0.84). Our sample is representative of the star-forming “main-sequence”, with star-formation rates of SFR = 0.1–30M⊙ yr−1 and stellar... Read More about Angular momentum evolution of galaxies over the past 10 Gyr: a MUSE and KMOS dynamical survey of 400 star-forming galaxies from z = 0.3 to 1.7.
Witnessing galaxy assembly in an extended z~3 structure (2017)
Journal Article
Fumagalli, M., Mackenzie, R., Trayford, J., Theuns, T., Cantalupo, S., Christensen, L., …Shanks, T. (2017). Witnessing galaxy assembly in an extended z~3 structure. Monthly Notices of the Royal Astronomical Society, 471(3), 3686-3698. https://doi.org/10.1093/mnras/stx1896We present new observations acquired with the Multi Unit Spectroscopic Explorer instrument on the Very Large Telescope in a quasar field that hosts a high column density damped Lyα absorber (DLA) at z ≈ 3.25. We detect Lyα emission from a nebula at t... Read More about Witnessing galaxy assembly in an extended z~3 structure.
The cosmic evolution of the metallicity distribution of ionized gas traced by Lyman limit systems (2016)
Journal Article
Lehner, N., O'Meara, J., Howk, J., Prochaska, J., & Fumagalli, M. (2016). The cosmic evolution of the metallicity distribution of ionized gas traced by Lyman limit systems. Astrophysical Journal, 833(2), Article 283. https://doi.org/10.3847/1538-4357/833/2/283We present the first results from our KODIAQ Z survey aimed to determine the metallicity distribution and physical properties of the z>2 partial and full Lyman limit systems (pLLSs and LLSs; 16.2
Exploring Damped Lyα System Host Galaxies Using Gamma-Ray Bursts (2016)
Journal Article
Toy, V. L., Cucchiara, A., Veilleux, S., Fumagalli, M., Rafelski, M., Rahmati, A., …Pasham, D. R. (2016). Exploring Damped Lyα System Host Galaxies Using Gamma-Ray Bursts. Astrophysical Journal, 832(2), Article 175. https://doi.org/10.3847/0004-637x/832/2/175We present a sample of 45 Damped Lyman-α system (DLA, \nhi\ ≥2×1020cm−2) counterparts (33 detections, 12 upper limits) which host gamma-ray bursts (GRB-DLAs) in order to investigate star-formation and metallicity within galaxies hosting DLAs. Our sam... Read More about Exploring Damped Lyα System Host Galaxies Using Gamma-Ray Bursts.
MUSE searches for galaxies near very metal-poor gas clouds at z~3: new constraints for cold accretion models (2016)
Journal Article
Fumagalli, M., Cantalupo, S., Dekel, A., Morris, S., O'Meara, J., Prochaska, J., & Theuns, T. (2016). MUSE searches for galaxies near very metal-poor gas clouds at z~3: new constraints for cold accretion models. Monthly Notices of the Royal Astronomical Society, 462(2), 1978-1988. https://doi.org/10.1093/mnras/stw1782We report on the search for galaxies in the proximity of two very metal-poor gas clouds at z ∼ 3 towards the quasar Q0956+122. With a 5-hour Multi-Unit Spectroscopic Explorer (MUSE) integration in a ∼500 × 500 kpc2 region centred at the quasar positi... Read More about MUSE searches for galaxies near very metal-poor gas clouds at z~3: new constraints for cold accretion models.
The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star-forming Galaxies from z ~ 1 to z ~3 (2016)
Journal Article
Rafelski, M., Gardner, J. P., Fumagalli, M., Neeleman, M., Teplitz, H. I., Grogin, N., …Scarlata, C. (2016). The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star-forming Galaxies from z ~ 1 to z ~3. Astrophysical Journal, 825(2), Article 87. https://doi.org/10.3847/0004-637x/825/2/87Current observational evidence suggests that the star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in damped Lyα systems (DLAs) at $z\sim 3$ is more than 10 times lower than predicted by the Kennicutt–Schmidt (KS) relation.... Read More about The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star-forming Galaxies from z ~ 1 to z ~3.
Robust automatic photometry of local galaxies from SDSS. Dissecting the color magnitude relation with color profiles (2016)
Journal Article
Consolandi, G., Gavazzi, G., Fumagalli, M., Dotti, M., & Fossati, M. (2016). Robust automatic photometry of local galaxies from SDSS. Dissecting the color magnitude relation with color profiles. Astronomy & Astrophysics, 591, Article A38. https://doi.org/10.1051/0004-6361/201527618We present an automatic procedure to perform reliable photometry of galaxies on SDSS images. We selected a sample of 5853 galaxies in the Coma and Virgo superclusters. For each galaxy, we derive Petrosian g and i magnitudes, surface brightness and co... Read More about Robust automatic photometry of local galaxies from SDSS. Dissecting the color magnitude relation with color profiles.
Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes (2016)
Journal Article
Archambault, S., Archer, A., Benbow, W., Bird, R., Biteau, J., Buchovecky, M., …Prochaska, J. (2016). Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes. Astronomical Journal, 151(6), Article 142. https://doi.org/10.3847/0004-6256/151/6/142Between the beginning of its full-scale scientific operations in 2007 and 2012, the VERITAS Cherenkov telescope array observed more than 130 blazars; of these, 26 were detected as very-high-energy (VHE; E > 100 GeV) γ-ray sources. In this work, we pr... Read More about Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes.
On the connection between the metal-enriched intergalactic medium and galaxies: an O VI–galaxy cross-correlation study at z < 1 (2016)
Journal Article
Finn, C., Morris, S., Tejos, N., Crighton, N., Perry, R., Fumagalli, M., …Bartle, S. (2016). On the connection between the metal-enriched intergalactic medium and galaxies: an O VI–galaxy cross-correlation study at z < 1. Monthly Notices of the Royal Astronomical Society, 460(1), 590-616. https://doi.org/10.1093/mnras/stw918We present new results on the auto- and cross-correlation functions of galaxies and O VI absorbers in a ∼18 Gpc3 comoving volume at z < 1. We use a sample of 51 296 galaxies and 140 O VI absorbers in the column density range 13 ≲ log N ≲ 15 to measur... Read More about On the connection between the metal-enriched intergalactic medium and galaxies: an O VI–galaxy cross-correlation study at z < 1.
Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569 (2016)
Journal Article
Boselli, A., Cuillandre, J., Fossati, M., Boissier, S., Bomans, D., Consolandi, G., …Toloba, E. (2016). Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569. Astronomy & Astrophysics, 587, Article A68. https://doi.org/10.1051/0004-6361/201527795Context. Using MegaCam at the CFHT, we obtained a deep narrow band Hα+[NII] wide-field image of NGC 4569 (M90), the brightest late-type galaxy in the Virgo cluster. The image reveals the presence of long tails of diffuse ionized gas, without any asso... Read More about Spectacular tails of ionized gas in the Virgo cluster galaxy NGC 4569.
The Spatial Distribution of the Young Stellar Clusters in the Star-forming Galaxy NGC 628 (2015)
Journal Article
Grasha, K., Calzetti, D., Adamo, A., Kim, H., Elmegreen, B., Gouliermis, D., …Wofford, A. (2015). The Spatial Distribution of the Young Stellar Clusters in the Star-forming Galaxy NGC 628. Astrophysical Journal, 815(2), https://doi.org/10.1088/0004-637x/815/2/93We present a study of the spatial distribution of the stellar cluster populations in the star-forming galaxy NGC 628. Using Hubble Space Telescope broadband WFC3/UVIS UV and optical images from the Treasury Program LEGUS (Legacy ExtraGalactic UV Surv... Read More about The Spatial Distribution of the Young Stellar Clusters in the Star-forming Galaxy NGC 628.
The physical properties of z > 2 Lyman limit systems: new constraints for feedback and accretion models (2015)
Journal Article
Fumagalli, M., O'Meara, J., & Prochaska, J. (2016). The physical properties of z > 2 Lyman limit systems: new constraints for feedback and accretion models. Monthly Notices of the Royal Astronomical Society, 455(4), 4100-4121. https://doi.org/10.1093/mnras/stv2616e study the physical properties of a homogeneous sample of 157 optically thick absorption line systems at redshifts ∼1.8–4.4, selected from a high-dispersion spectroscopic survey of Lyman limit systems (LLSs). By means of multiple ionization models a... Read More about The physical properties of z > 2 Lyman limit systems: new constraints for feedback and accretion models.
MUSE sneaks a peek at extreme ram-pressure stripping events – II. The physical properties of the gas tail of ESO137−001 (2015)
Journal Article
Fossati, M., Fumagalli, M., Boselli, A., Gavazzi, G., Sun, M., & Wilman, D. (2016). MUSE sneaks a peek at extreme ram-pressure stripping events – II. The physical properties of the gas tail of ESO137−001. Monthly Notices of the Royal Astronomical Society, 455(2), 2028-2041. https://doi.org/10.1093/mnras/stv2400We present a study of the physical properties of the disc and tail of ESO137−001, a galaxy suffering from extreme ram-pressure stripping during its infall into the Norma cluster. With sensitive and spatially resolved MUSE (Multi Unit Spectroscopic Ex... Read More about MUSE sneaks a peek at extreme ram-pressure stripping events – II. The physical properties of the gas tail of ESO137−001.
The cluster-scale environment of PKS 2155-304 (2015)
Journal Article
Farina, E., Fumagalli, M., Decarli, R., & Fanidakis, N. (2016). The cluster-scale environment of PKS 2155-304. Monthly Notices of the Royal Astronomical Society, 455(1), 618-625. https://doi.org/10.1093/mnras/stv2277PKS 2155−304 is one of the brightest extragalactic source in the X-ray and EUV bands, and is a prototype for the BL Lac class of objects. In this paper, we investigate the large-scale environment of this source using new multi-object as well as long-... Read More about The cluster-scale environment of PKS 2155-304.
The Keck + Magellan Survey for Lyman Limit Absorption. III. Sample Definition and Column Density Measurements (2015)
Journal Article
Prochaska, J., O'Meara, J., Fumagalli, M., Bernstein, R., & Burles, S. (2015). The Keck + Magellan Survey for Lyman Limit Absorption. III. Sample Definition and Column Density Measurements. Astrophysical Journal Supplement, 221(1), https://doi.org/10.1088/0067-0049/221/1/2We present an absorption-line survey of optically thick gas clouds—Lyman Limit Systems (LLSs)—observed at high dispersion with spectrometers on the Keck and Magellan telescopes. We measure column densities of neutral hydrogen ${N}_{{\rm{H}}\;{\rm{I}}... Read More about The Keck + Magellan Survey for Lyman Limit Absorption. III. Sample Definition and Column Density Measurements.
Star Cluster Properties in Two LEGUS Galaxies Computed with Stochastic Stellar Population Synthesis Models (2015)
Journal Article
Krumholz, M., Adamo, A., Fumagalli, M., Wofford, A., Calzetti, D., Lee, J., …Zackrisson, E. (2015). Star Cluster Properties in Two LEGUS Galaxies Computed with Stochastic Stellar Population Synthesis Models. Astrophysical Journal, 812(2), https://doi.org/10.1088/0004-637x/812/2/147We investigate a novel Bayesian analysis method, based on the Stochastically Lighting Up Galaxies (slug) code, to derive the masses, ages, and extinctions of star clusters from integrated light photometry. Unlike many analysis methods, slug correctly... Read More about Star Cluster Properties in Two LEGUS Galaxies Computed with Stochastic Stellar Population Synthesis Models.
The Brightest Young Star Clusters in NGC 5253 (2015)
Journal Article
Calzetti, D., Johnson, K., Adamo, A., Gallagher, J., Andrews, J., Smith, L., …Tosi, M. (2015). The Brightest Young Star Clusters in NGC 5253. Astrophysical Journal, 811(2), https://doi.org/10.1088/0004-637x/811/2/75The nearby dwarf starburst galaxy NGC 5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the "radio nebula"). To investigate the role of these clusters i... Read More about The Brightest Young Star Clusters in NGC 5253.
SLUG – stochastically lighting up galaxies – III. A suite of tools for simulated photometry, spectroscopy, and Bayesian inference with stochastic stellar populations (2015)
Journal Article
Krumholz, M., Fumagalli, M., da Silva, R., Rendahl, T., & Parra, J. (2015). SLUG – stochastically lighting up galaxies – III. A suite of tools for simulated photometry, spectroscopy, and Bayesian inference with stochastic stellar populations. Monthly Notices of the Royal Astronomical Society, 452(2), 1447-1467. https://doi.org/10.1093/mnras/stv1374Stellar population synthesis techniques for predicting the observable light emitted by a stellar population have extensive applications in numerous areas of astronomy. However, accurate predictions for small populations of young stars, such as those... Read More about SLUG – stochastically lighting up galaxies – III. A suite of tools for simulated photometry, spectroscopy, and Bayesian inference with stochastic stellar populations.
The neutral hydrogen cosmological mass density at z = 5 (2015)
Journal Article
Crighton, N., Murphy, M., Prochaska, J., Worseck, G., Rafelski, M., Becker, G., …O'Meara, J. (2015). The neutral hydrogen cosmological mass density at z = 5. Monthly Notices of the Royal Astronomical Society, 452(1), 217-234. https://doi.org/10.1093/mnras/stv1182We present the largest homogeneous survey of z > 4.4 damped Lyα systems (DLAs) using the spectra of 163 QSOs that comprise the Giant Gemini GMOS (GGG) survey. With this survey we make the most precise high-redshift measurement of the cosmological mas... Read More about The neutral hydrogen cosmological mass density at z = 5.
Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. VI. The role of bars in quenching star formation from z = 3 to the present epoch (2015)
Journal Article
Gavazzi, G., Consolandi, G., Dotti, M., Fanali, R., Fossati, M., Fumagalli, M., …Haynes, M. (2015). Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. VI. The role of bars in quenching star formation from z = 3 to the present epoch. Astronomy & Astrophysics, 580, https://doi.org/10.1051/0004-6361/201425351A growing body of evidence indicates that the star formation rate per unit stellar mass (sSFR) decreases with increasing mass in normal main-sequence star-forming galaxies. Many processes have been advocated as being responsible for this trend (also... Read More about Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. VI. The role of bars in quenching star formation from z = 3 to the present epoch.
Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infrared colour selection (2015)
Journal Article
Carnall, A., Shanks, T., Chehade, B., Fumagalli, M., Rauch, M., Irwin, M., …Metcalfe, N. (2015). Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infrared colour selection. Monthly Notices of the Royal Astronomical Society: Letters, 451(1), L16-L20. https://doi.org/10.1093/mnrasl/slv057We present the discovery of two z > 6 quasars, selected as i-band dropouts in the Very Large Telescope Survey Telescope ATLAS survey. Our first quasar has redshift, z = 6.31 ± 0.03, z-band magnitude, zAB = 19.63 ± 0.08 and rest frame 1450 Å absolute... Read More about Two bright z > 6 quasars from VST ATLAS and a new method of optical plus mid-infrared colour selection.
Unveiling the Secrets of Metallicity and Massive Star Formation Using DLAs along Gamma-Ray Bursts (2015)
Journal Article
Cucchiara, A., Fumagalli, M., Rafelski, M., Kocevski, D., Prochaska, J., Cooke, R., & Becker, G. (2015). Unveiling the Secrets of Metallicity and Massive Star Formation Using DLAs along Gamma-Ray Bursts. Astrophysical Journal, 804(1), https://doi.org/10.1088/0004-637x/804/1/51We present the largest, publicly available sample of damped Lyα systems (DLAs) along the lines of sight of Swift-discovered gamma-ray bursts (GRBs) in order to investigate the environmental properties of long GRB hosts in the z = 1.8–6 redshift range... Read More about Unveiling the Secrets of Metallicity and Massive Star Formation Using DLAs along Gamma-Ray Bursts.
Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. V. The Coma supercluster survey completion (2015)
Journal Article
Gavazzi, G., Consolandi, G., Viscardi, E., Fossati, M., Savorgnan, G., Fumagalli, M., …Haynes, M. P. (2015). Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. V. The Coma supercluster survey completion. Astronomy & Astrophysics, 576, https://doi.org/10.1051/0004-6361/201425349Neutral hydrogen represents the major observable baryonic constituent of galaxies that fuels the formation of stars through transformation of molecular hydrogen. The emission of the hydrogen recombination line Hα is the most direct tracer of the proc... Read More about Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. V. The Coma supercluster survey completion.
Legacy Extragalactic UV Survey (LEGUS) With the Hubble Space Telescope. I. Survey Description (2015)
Journal Article
Calzetti, D., Lee, J., Sabbi, E., Adamo, A., Smith, L., Andrews, J., …Wofford, A. (2015). Legacy Extragalactic UV Survey (LEGUS) With the Hubble Space Telescope. I. Survey Description. Astronomical Journal, 149(2), Article 51. https://doi.org/10.1088/0004-6256/149/2/51The Legacy ExtraGalactic UV Survey (LEGUS) is a Cycle 21 Treasury program on the Hubble Space Telescope aimed at the investigation of star formation and its relation with galactic environment in nearby galaxies, from the scales of individual stars to... Read More about Legacy Extragalactic UV Survey (LEGUS) With the Hubble Space Telescope. I. Survey Description.
Investigating Broadband Variability of the TeV Blazar 1ES 1959+650 (2014)
Journal Article
Aliu, E., Archambault, S., Arlen, T., Aune, T., Barnacka, A., Beilicke, M., …Fumagalli, M. (2014). Investigating Broadband Variability of the TeV Blazar 1ES 1959+650. Astrophysical Journal, 797(2), Article 89. https://doi.org/10.1088/0004-637x/797/2/89We summarize broadband observations of the TeV-emitting blazar 1ES 1959+650, including optical R-band observations by the robotic telescopes Super-LOTIS and iTelescope, UV observations by Swift Ultraviolet and Optical Telescope, X-ray observations by... Read More about Investigating Broadband Variability of the TeV Blazar 1ES 1959+650.
Directly imaging damped Ly α galaxies at z > 2 – III. The star formation rates of neutral gas reservoirs at z ∼ 2.7 (2014)
Journal Article
Fumagalli, M., O'Meara, J., Prochaska, J., Rafelski, M., & Kanekar, N. (2015). Directly imaging damped Ly α galaxies at z > 2 – III. The star formation rates of neutral gas reservoirs at z ∼ 2.7. Monthly Notices of the Royal Astronomical Society, 446(3), 3178-3198. https://doi.org/10.1093/mnras/stu2325We present results from a survey designed to probe the star formation properties of 32 damped Lyman α systems (DLAs) at z ∼ 2.7. By using the ‘double-DLA’ technique that eliminates the glare of the bright background quasars, we directly measure the r... Read More about Directly imaging damped Ly α galaxies at z > 2 – III. The star formation rates of neutral gas reservoirs at z ∼ 2.7.
The Giant Gemini GMOS survey of zem > 4.4 quasars – I. Measuring the mean free path across cosmic time (2014)
Journal Article
Worseck, G., Prochaska, J., O'Meara, J., Becker, G., Ellison, S., Lopez, S., …Fumagalli, M. (2014). The Giant Gemini GMOS survey of zem > 4.4 quasars – I. Measuring the mean free path across cosmic time. Monthly Notices of the Royal Astronomical Society, 445(2), 1745-1760. https://doi.org/10.1093/mnras/stu1827We have obtained spectra of 163 quasars at zem > 4.4 with the Gemini Multi Object Spectrometers, the largest publicly available sample of high-quality, low-resolution spectra at these redshifts. From this data set, we generated stacked quasar spectra... Read More about The Giant Gemini GMOS survey of zem > 4.4 quasars – I. Measuring the mean free path across cosmic time.
SLUG - Stochastically Lighting Up Galaxies - II. Quantifying the effects of stochasticity on star formation rate indicators (2014)
Journal Article
da Silva, R. L., Fumagalli, M., & Krumholz, M. R. (2014). SLUG - Stochastically Lighting Up Galaxies - II. Quantifying the effects of stochasticity on star formation rate indicators. Monthly Notices of the Royal Astronomical Society, 444(4), 3275-3287. https://doi.org/10.1093/mnras/stu1688The integrated light of a stellar population, measured through photometric filters that are sensitive to the presence of young stars, is often used to infer the star formation rate (SFR) for that population. However, these techniques rely on an assum... Read More about SLUG - Stochastically Lighting Up Galaxies - II. Quantifying the effects of stochasticity on star formation rate indicators.
Metal-enriched, subkiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy (2014)
Journal Article
Crighton, N., Hennawi, J., Simcoe, R., Cooksey, K., Murphy, M., Fumagalli, M., …Shanks, T. (2015). Metal-enriched, subkiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy. Monthly Notices of the Royal Astronomical Society, 446(1), 18-37. https://doi.org/10.1093/mnras/stu2088We report the serendipitous detection of a 0.2 L*, Lyα emitting galaxy at redshift 2.5 at an impact parameter of 50 kpc from a bright background QSO sightline. A high-resolution spectrum of the QSO reveals a partial Lyman-limit absorption system (NHi... Read More about Metal-enriched, subkiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy.
MUSE sneaks a peek at extreme ram-pressure stripping events – I. A kinematic study of the archetypal galaxy ESO137-001 (2014)
Journal Article
Fumagalli, M., Fossati, M., Hau, G., Gavazzi, G., Bower, R., Sun, M., & Boselli, A. (2014). MUSE sneaks a peek at extreme ram-pressure stripping events – I. A kinematic study of the archetypal galaxy ESO137-001. Monthly Notices of the Royal Astronomical Society, 445(4), 4335-4344. https://doi.org/10.1093/mnras/stu2092We present Multi Unit Spectroscopic Explorer (MUSE) observations of ESO137−001, a spiral galaxy infalling towards the centre of the massive Norma cluster at z ∼ 0.0162. During the high-velocity encounter of ESO137−001 with the intracluster medium, a... Read More about MUSE sneaks a peek at extreme ram-pressure stripping events – I. A kinematic study of the archetypal galaxy ESO137-001.
Directly imaging damped Lyα galaxies at z > 2 – II. Imaging and spectroscopic observations of 32 quasar fields (2014)
Journal Article
Fumagalli, M., O'Meara, J., Prochaska, X., Kanekar, N., & Wolfe, A. (2014). Directly imaging damped Lyα galaxies at z > 2 – II. Imaging and spectroscopic observations of 32 quasar fields. Monthly Notices of the Royal Astronomical Society, 444(2), 1282-1300. https://doi.org/10.1093/mnras/stu1512Damped Lyα absorbers (DLAs) are a well-studied class of absorption line systems, and yet the properties of their host galaxies remain largely unknown. To investigate the origin of these systems, we have conducted an imaging survey of 32 quasar fields... Read More about Directly imaging damped Lyα galaxies at z > 2 – II. Imaging and spectroscopic observations of 32 quasar fields.
The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). IV. The role of the cluster environment on galaxy evolution (2014)
Journal Article
Boselli, A., Voyer, E., Boissier, S., Cucciati, O., Consolandi, G., Cortese, L., …Toloba, E. (2014). The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). IV. The role of the cluster environment on galaxy evolution. Astronomy & Astrophysics, 570, https://doi.org/10.1051/0004-6361/201424419We study the role of the environment on galaxy evolution using a sample of 868 galaxies in the Virgo cluster and in its surrounding regions that are selected from the GALEX Ultraviolet Virgo Cluster Survey (GUViCS) with the purpose of understanding t... Read More about The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). IV. The role of the cluster environment on galaxy evolution.
A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations (2014)
Journal Article
Finn, C. W., Morris, S. L., Crighton, N. H., Hamann, F., Done, C., Theuns, T., …Worseck, G. (2014). A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations. Monthly Notices of the Royal Astronomical Society, 440(4), 3317-3340. https://doi.org/10.1093/mnras/stu518We present HST/COS observations of highly ionized absorption lines associated with a radio-loud quasar (QSO) at z = 1.1319. The absorption system has multiple velocity components, with an overall width of ≈600 km s−1, tracing gas that is largely outf... Read More about A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations.
The nature of massive black hole binary candidates - II. Spectral energy distribution atlas (2014)
Journal Article
Lusso, E., Decarli, R., Dotti, M., Montuori, C., Hogg, D., Tsalmantza, P., …Prochaska, J. (2014). The nature of massive black hole binary candidates - II. Spectral energy distribution atlas. Monthly Notices of the Royal Astronomical Society, 441(1), 316-332. https://doi.org/10.1093/mnras/stu572Recoiling supermassive black holes (SMBHs) are considered one plausible physical mechanism to explain high velocity shifts between narrow and broad emission lines sometimes observed in quasar spectra. If the sphere of influence of the recoiling SMBH... Read More about The nature of massive black hole binary candidates - II. Spectral energy distribution atlas.
An analytic method to compute star cluster luminosity statistics (2014)
Journal Article
da Silva, R., Krumholz, M., Fumagalli, M., & Fall, S. (2014). An analytic method to compute star cluster luminosity statistics. Monthly Notices of the Royal Astronomical Society, 438(3), 2355-2370. https://doi.org/10.1093/mnras/stt2351The luminosity distribution of the brightest star clusters in a population of galaxies encodes critical pieces of information about how clusters form, evolve and disperse, and whether and how these processes depend on the large-scale galactic environ... Read More about An analytic method to compute star cluster luminosity statistics.
Towards a unified description of the intergalactic medium at redshift z ≈ 2.5 (2014)
Journal Article
Prochaska, J., Madau, P., O'Meara, J., & Fumagalli, M. (2014). Towards a unified description of the intergalactic medium at redshift z ≈ 2.5. Monthly Notices of the Royal Astronomical Society, 438(1), 476-486. https://doi.org/10.1093/mnras/stt2218We examine recent measurements of the z ≈ 2.5 intergalactic medium (IGM) which constrain the H I frequency distribution f(NHI) and the mean free path λ912mfp to ionizing radiation. We argue that line-blending and the clustering of strong absorption-l... Read More about Towards a unified description of the intergalactic medium at redshift z ≈ 2.5.
The Rapid Decline in Metallicity of Damped Lyα Systems at z ~ 5 (2014)
Journal Article
Rafelski, M., Neeleman, M., Fumagalli, M., Wolfe, A., & Prochaska, J. (2014). The Rapid Decline in Metallicity of Damped Lyα Systems at z ~ 5. Astrophysical Journal Letters, 782(2), Article L29. https://doi.org/10.1088/2041-8205/782/2/l29We present evidence that the cosmological mean metallicity of neutral atomic hydrogen gas shows a sudden decrease at z > 4.7 down to $\langle {Z}\rangle =-2.03^{+0.09}_{-0.11}$, which is 6σ deviant from that predicted by a linear fit to the data at l... Read More about The Rapid Decline in Metallicity of Damped Lyα Systems at z ~ 5.
The first AllWISE proper motion discovery : WISEA J070720.50+170532.7 (2014)
Journal Article
Wright, E., Kirkpatrick, J., Gelino, C., Fajardo-Acosta, S., Mace, G., Eisenhardt, P., …Burgasser, A. (2014). The first AllWISE proper motion discovery : WISEA J070720.50+170532.7. Astronomical Journal, 147(3), Article 61. https://doi.org/10.1088/0004-6256/147/3/61While quality checking a new motion-aware co-addition of all 12.5 months of Wide-field Infrared Survey Explorer (WISE) data, we found that the source WISE J070720.48+170533.0 moved 0.''9 in six months. Backtracking this motion allowed us to identify... Read More about The first AllWISE proper motion discovery : WISEA J070720.50+170532.7.
Confronting Simulations of Optically Thick Gas in Massive Halos with Observations at z = 2-3 (2014)
Journal Article
Fumagalli, M., Hennawi, J., Prochaska, J., Kasen, D., Dekel, A., Ceverino, D., & Primack, J. (2014). Confronting Simulations of Optically Thick Gas in Massive Halos with Observations at z = 2-3. Astrophysical Journal, 780(1), Article 74. https://doi.org/10.1088/0004-637x/780/1/74Cosmological hydrodynamic simulations predict the physical state of baryons in the circumgalactic medium (CGM), which can be directly tested via quasar absorption line observations. We use high-resolution "zoom-in" simulations of 21 galaxies to chara... Read More about Confronting Simulations of Optically Thick Gas in Massive Halos with Observations at z = 2-3.
Long Term Observations of B2 1215+30 with VERITAS (2013)
Journal Article
Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., …Collaboration, V. (2013). Long Term Observations of B2 1215+30 with VERITAS. Astrophysical Journal, 779(2), Article 92. https://doi.org/10.1088/0004-637x/779/2/92We report on VERITAS observations of the BL Lac object B2 1215+30 between 2008 and 2012. During this period, the source was detected at very high energies (VHEs; E > 100 GeV) by VERITAS with a significance of 8.9σ and showed clear variability on time... Read More about Long Term Observations of B2 1215+30 with VERITAS.
Dissecting the Properties of Optically Thick Hydrogen at the Peak of Cosmic Star Formation History (2013)
Journal Article
Fumagalli, M., O'Meara, J., Prochaska, J., & Worseck, G. (2013). Dissecting the Properties of Optically Thick Hydrogen at the Peak of Cosmic Star Formation History. Astrophysical Journal, 775(1), Article 78. https://doi.org/10.1088/0004-637x/775/1/78We present the results of a blind survey of Lyman limit systems (LLSs) detected in absorption against 105 quasars at z ~ 3 using the blue sensitive MagE spectrograph at the Magellan Clay telescope. By searching for Lyman limit absorption in the wavel... Read More about Dissecting the Properties of Optically Thick Hydrogen at the Peak of Cosmic Star Formation History.
The nature of massive black hole binary candidates - I. Spectral properties and evolution (2013)
Journal Article
Decarli, R., Dotti, M., Fumagalli, M., Tsalmantza, P., Montuori, C., Lusso, E., …Prochaska, J. (2013). The nature of massive black hole binary candidates - I. Spectral properties and evolution. Monthly Notices of the Royal Astronomical Society, 433(2), 1492-1504. https://doi.org/10.1093/mnras/stt831Theoretically, bound binaries of massive black holes are expected as the natural outcome of mergers of massive galaxies. From the observational side, however, massive black hole binaries remain elusive. Velocity shifts between narrow and broad emissi... Read More about The nature of massive black hole binary candidates - I. Spectral properties and evolution.
The Blazar Emission Environment: Insight from Soft X-Ray Absorption (2013)
Journal Article
Furniss, A., Fumagalli, M., Falcone, A., & Williams, D. (2013). The Blazar Emission Environment: Insight from Soft X-Ray Absorption. Astrophysical Journal, 770(1), Article 109. https://doi.org/10.1088/0004-637x/770/2/109Collecting experimental insight into the relativistic particle populations and emission mechanisms at work within TeV-emitting blazar jets, which are spatially unresolvable in most bands and have strong beaming factors, is a daunting task. New observ... Read More about The Blazar Emission Environment: Insight from Soft X-Ray Absorption.
Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. IV. Structure of galaxies in the Local and Coma superclusters (2013)
Journal Article
Fossati, M., Gavazzi, G., Savorgnan, G., Fumagalli, M., Boselli, A., Gutiérrez, L., …Haynes, M. (2013). Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. IV. Structure of galaxies in the Local and Coma superclusters. Astronomy & Astrophysics, 553, Article A91. https://doi.org/10.1051/0004-6361/201220915Context. We present the analysis of the galaxy structural parameters from Hα3, an Hα narrow-band imaging follow-up survey of ~800 galaxies selected from the HI Arecibo Legacy Fast ALFA Survey (ALFALFA) in the Local supercluster, including the Virgo c... Read More about Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. IV. Structure of galaxies in the Local and Coma superclusters.
Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. II. Star formation properties of galaxies in the Virgo cluster and surroundings (2013)
Journal Article
Gavazzi, G., Fumagalli, M., Fossati, M., Galardo, V., Grossetti, F., Boselli, A., …Haynes, M. (2013). Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. II. Star formation properties of galaxies in the Virgo cluster and surroundings. Astronomy & Astrophysics, 553, Article A89. https://doi.org/10.1051/0004-6361/201218789Context. We present the analysis of Hα3, an Hα narrow-band imaging follow-up survey of 409 galaxies selected from the HI Arecibo Legacy Fast ALFA Survey (ALFALFA) in the Local Supercluster, including the Virgo cluster, in the region 11h < RA < 16h ; ... Read More about Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. II. Star formation properties of galaxies in the Virgo cluster and surroundings.
Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. III. Nurture builds up the Hubble sequence in the Great Wall (2013)
Journal Article
Gavazzi, G., Savorgnan, G., Fossati, M., Dotti, M., Fumagalli, M., Boselli, A., …Haynes, M. (2013). Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. III. Nurture builds up the Hubble sequence in the Great Wall. Astronomy & Astrophysics, 553, Article A90. https://doi.org/10.1051/0004-6361/201220916Context. We present the analysis of Hα3, an Hα narrow-band imaging follow-up survey of galaxies selected from the HI Arecibo Legacy Fast ALFA Survey (ALFALFA) in the Coma supercluster. Aims. Taking advantage of Hα3, which provides the complete census... Read More about Hα3: an Hα imaging survey of HI selected galaxies from ALFALFA. III. Nurture builds up the Hubble sequence in the Great Wall.
Caught in the act: discovery of a physical quasar triplet (2013)
Journal Article
Farina, E., Montuori, C., Decarli, R., & Fumagalli, M. (2013). Caught in the act: discovery of a physical quasar triplet. Monthly Notices of the Royal Astronomical Society, 431(2), 1019-1025. https://doi.org/10.1093/mnras/stt209We present the discovery of a triplet of quasars at z ≈ 1.51. The whole system is well accommodated within 25 arcsec (i.e. 200 kpc in projected distance). The velocity differences among the three objects (as measured through the broad Mg II emission... Read More about Caught in the act: discovery of a physical quasar triplet.
The Firm Redshift Lower Limit of the Most Distant TeV-detected Blazar PKS 1424+240 (2013)
Journal Article
Furniss, A., Williams, D., Danforth, C., Fumagalli, M., Prochaska, J., Primack, J., …Neely, W. (2013). The Firm Redshift Lower Limit of the Most Distant TeV-detected Blazar PKS 1424+240. Astrophysical Journal Letters, 768(2), Article L31. https://doi.org/10.1088/2041-8205/768/2/l31We present the redshift lower limit of z ≥ 0.6035 for the very high energy (VHE; E ≥ 100 GeV) emitting blazar PKS 1424+240 (PG 1424+240). This limit is inferred from Lyβ and Lyγ absorption observed in the far-ultraviolet spectra from the Hubble Space... Read More about The Firm Redshift Lower Limit of the Most Distant TeV-detected Blazar PKS 1424+240.
On the Redshift of the Very High Energy Blazar 3C 66A (2013)
Journal Article
Furniss, A., Fumagalli, M., Danforth, C., Williams, D., & Prochaska, J. (2013). On the Redshift of the Very High Energy Blazar 3C 66A. Astrophysical Journal, 766(1), Article 35. https://doi.org/10.1088/0004-637x/766/1/35As a bright gamma-ray source, 3C 66A is of great interest to the high-energy astrophysics community, having a potential for placing cosmological constraints on models for the extragalactic background light (EBL) and the processes which contribute to... Read More about On the Redshift of the Very High Energy Blazar 3C 66A.
SLUG: Stochastically Lighting Up Galaxies. I. Methods and Validating Tests (2012)
Journal Article
da Silva, R., Fumagalli, M., & Krumholz, M. (2012). SLUG: Stochastically Lighting Up Galaxies. I. Methods and Validating Tests. Astrophysical Journal, 745(2), Article 145. https://doi.org/10.1088/0004-637x/745/2/145The effects of stochasticity on the luminosities of stellar populations are an often neglected but crucial element for understanding populations in the low-mass or the low star formation rate regime. To address this issue, we present SLUG, a new code... Read More about SLUG: Stochastically Lighting Up Galaxies. I. Methods and Validating Tests.
Broad-line Reverberation in the Kepler-field Seyfert Galaxy Zw 229-015 (2011)
Journal Article
Barth, A., Nguyen, M., Malkan, M., Filippenko, A., Li, W., Gorjian, V., …Zeisse, C. (2011). Broad-line Reverberation in the Kepler-field Seyfert Galaxy Zw 229-015. Astrophysical Journal, 732(2), Article 121. https://doi.org/10.1088/0004-637x/732/2/121The Seyfert 1 galaxy Zw 229-015 is among the brightest active galaxies being monitored by the Kepler mission. In order to determine the black hole mass in Zw 229-015 from Hβ reverberation mapping, we have carried out nightly observations with the Kas... Read More about Broad-line Reverberation in the Kepler-field Seyfert Galaxy Zw 229-015.