Professor Michele Fumagalli's Outputs (114)

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/aa6007

We 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/stx528

We 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/stx398

We 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/stx201

We 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/stx1896

We 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/10.3847/1538-4357/833/2/283

We 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/832/2/175

We 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/stw1782

We 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/825/2/87

Current 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/10.1051/0004-6361/201527618

We 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/10.3847/0004-6256/151/6/142

Between 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/stw918

We 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/10.1051/0004-6361/201527795

Context. 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/815/2/93

We 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/stv2616

e 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/stv2400

We 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/stv2277

PKS 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/10.1088/0067-0049/221/1/2

We 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/812/2/147

We 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/811/2/75

The 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.