Professor Michele Fumagalli's Outputs (14)

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/stz3573

Observational 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., Prochaska, J. X., Cantalupo, S., Bielby, R. M., Cooke, R. J., Lusso, E., & 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/stz3066

We 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., Cooke, R., Cristiani, S., Haardt, F., Morris, S., Peroux, C., Prichard, L., Rafelski, M., Smail, I., & 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/stz2693

We 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., Sykes, C., Ivison, R., Steidel, C., Shapley, A., Vernet, J., Yamada, T., Tamura, Y., Kubo, M., Nakanishi, K., Kajisawa, M., Hatsukade, B., & 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.aaw5949

Cosmological 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., Cupani, G., Ellison, S. L., Farina, E. P., Fumagalli, M., López, S., Neeleman, M., Ryan-Weber, E. V., & 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/ab3eb5

We 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., Sivanandam, S., Brinks, E., Roediger, E., Palouš, J., & 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/ab3e6c

We 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/s41550-019-0812-1

Young 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., Christensen, L., Fynbo, J. P., Kanekar, N., Møller, P., O’Meara, J., Prochaska, J. X., Rafelski, M., Shanks, T., & 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/stz1501

We 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/stz1526

The 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/stz1234

Photoheating 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., Cantalupo, S., Cooke, R., Cristiani, S., Dayal, P., D’Odorico, V., Haardt, F., Lofthouse, E., Morris, S., Peroux, C., Prichard, L., Rafelski, M., Simcoe, R., Swinbank, M., & 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/slz032

We 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/stz331

We 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/stz136

We 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/aaf28b

We 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.