Connecting young star clusters to CO molecular gas in NGC 7793 with ALMA–LEGUS

Grasha, K.; Calzetti, D.; Bittle, L.; Johnson, K.E.; Meyer, J.D.; Kennicutt, R.C.; Elmegreen, B.G.; Adamo, A.; Krumholz, M.R.; Fumagalli, M.; Grebel, E.K.; Gouliermis, D.A.; Cook, D.O.; Gallagher, J.S.; Aloisi, A.; Dale, D.A.; Linden, S.; Sacchi, E.; Thilker, D.A.; Walterbos, R.A.M.; Messa, M.; Wofford, A.; Smith, L.J.

doi:10.1093/mnras/sty2154

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.

Overdensity of submillimeter galaxies around the z ≃ 2.3 MAMMOTH-1 nebula (2018)
Journal Article
Arrigoni Battaia, F., Chen, C.-C., Fumagalli, M., Cai, Z., Calistro Rivera, G., Xu, J., Smail, I., Prochaska, J., Yang, Y., & De Breuck, C. (2018). Overdensity of submillimeter galaxies around the z ≃ 2.3 MAMMOTH-1 nebula. Astronomy & Astrophysics, 620, Article A202. https://doi.org/10.1051/0004-6361/201834195

In 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., Dale, D., Fedorenko, K., Mahadevan, S., Grebel, E., Fumagalli, M., Kim, H., Dobbs, C., Gouliermis, D., Ashworth, G., Gallagher, J., Smith, L., Tosi, M., Whitmore, B., Schinnerer, E., …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/sty3424

We 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., Anderson, J., Boissier, S., Boquien, M., Buat, V., Burgarella, D., Cortese, L., Côté, P., Cuillandre, J., Durrell, P., Epinat, B., Ferrarese, L., Fumagalli, M., Galbany, L., Gavazzi, G., …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/10.1051/0004-6361/201833914

We 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., Harvey, D., Richard, J., Hamer, S. L., Fumagalli, M., Swinbank, A. M., Kneib, J.-P., Massey, R., & 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/sty3312

We 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/sty3287

We 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/10.1051/0004-6361/201833608

We 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/sty2956

In 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/sty2896

We 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-z

Almost 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., Elmegreen, B., Adamo, A., Krumholz, M., Fumagalli, M., Grebel, E., Gouliermis, D., Cook, D., Gallagher, J., Aloisi, A., Dale, D., Linden, S., Sacchi, E., Thilker, D., Walterbos, 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/sty2154

We 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.

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