Galaxy formation and evolution

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A Redshift Survey of Herschel Far-Infrared Selected Starbursts and Implications for Obscured Star Formation

(2012)

Authors:

CM Casey, S Berta, M Béthermin, J Bock, C Bridge, J Budynkiewicz, D Burgarella, E Chapin, SC Chapman, DL Clements, A Conley, CJ Conselice, A Cooray, D Farrah, E Hatziminaoglou, RJ Ivison, E Le Floc'h, D Lutz, G Magdis, B Magnelli, SJ Oliver, MJ Page, F Pozzi, D Rigopoulou, L Riguccini, IG Roseboom, DB Sanders, D Scott, N Seymour, I Valtchanov, JD Vieira, M Viero, J Wardlow
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Stellar transits in active galactic nuclei

(2012)

Authors:

Bence Béky, Bence Kocsis
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The molecular gas content of z = 3 lyman break galaxies: Evidence of a non-evolving gas fraction in main-sequence galaxies at z > 2

Astrophysical Journal Letters 758:1 (2012)

Authors:

GE Magdis, E Daddi, M Sargent, D Elbaz, R Gobat, H Dannerbauer, C Feruglio, Q Tan, D Rigopoulou, V Charmandaris, M Dickinson, N Reddy, H Aussel

Abstract:

We present observations of the CO[J = 3 → 2] emission toward two massive and infrared luminous Lyman break galaxies (LBGs) at z = 3.21 and z = 2.92, using the IRAM Plateau de Bure Interferometer, placing first constraints on the molecular gas masses (M gas) of non-lensed LBGs. Their overall properties are consistent with those of typical (main-sequence) galaxies at their redshifts, with specific star formation rates 1.6 and 2.2Gyr-1, despite their large infrared luminosities (L IR (2-3) × 1012L) derived from Herschel. With one plausible CO detection (spurious detection probability of 10-3) and one upper limit, we investigate the evolution of the molecular gas-to-stellar mass ratio (M gas/M *) with redshift. Our data suggest that the steep evolution of M gas/M * of normal galaxies up to z 2 is followed by a flattening at higher redshifts, providing supporting evidence for the existence of a plateau in the evolution of the specific star formation rate at z > 2.5. © 2012. The American Astronomical Society. All rights reserved.
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The Evolving Interstellar Medium of Star Forming Galaxies Since z=2 as Probed by Their Infrared Spectral Energy Distributions

(2012)

Authors:

Georgios E Magdis, E Daddi, M Bethermin, M Sargent, D Elbaz, M Pannella, M Dickinson, H Dannerbauer, E Da Cunha, F Walter, D Rigopoulou, V Charmandaris, H-S Hwang, J Kartaltepe
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Disentangling the stellar populations in the counter-rotating disc galaxy NGC 4550

(2012)

Authors:

Evelyn J Johnston, Michael R Merrifield, Alfonso Aragon-Salamanca, Michele Cappellari
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