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arXiv · 1304.7000

On the redshift evolution (0 < z < 4) of dust attenuation and of the total (UV+IR) star formation rate density

D. Burgarella·V. Buat·C. Gruppioni·O. Cucciati·S. Heinis·S. Berta·M. Bethermin·J. Bock·A. Cooray·J. S. Dunlop·D. Farrah·A. Franceschini·E. Le Floc'h·D. Lutz·B. Magnelli·R. Nordon·S. J. Oliver·M. J. Page·P. Popesso·F. Pozzi·L. Riguccini·M. Vaccari·M. Viero
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Abstract

Using new homogeneous LFs in the FUV and in the FIR Herschel/PEP and Herschel/HerMES, we study the evolution of the dust attenuation with redshift. With this information in hand, we are able to estimate the redshift evolution of the total (FUV + FIR) star formation rate density SFRD_TOT. By integrating SFRD_TOT, we follow the mass building and analyze the redshift evolution of the stellar mass density (SMD). This letter aims at providing a complete view of star formation from the local universe to z = 4 and, using assumptions on earlier star formation history, compares this evolution to what was known before in an attempt to draw a homogeneous picture of the global evolution of star formation in galaxies. The main conclusions of this letter are: 1) the dust attenuation A_FUV is found to increase from z = 0 to z \sim 1.2 and then starts to decrease up to our last data point at z = 3.6; 2) the estimated SFRD confirms published results up to z = 2. At z > 2, we observe either a plateau or a small increase up to z = 3 and then a likely decrease up to z = 3.6; 3) the peak of A_FUV is delayed with respect to the plateau of SFRD_TOT and a likely origin might be found in the evolution of the bright ends of the FUV and FIR LFs; 4) using assumptions (namely exponential rise and linear rise with time) for the evolution of the star formation density from z = 3.6 to z_form = 10, we integrate SFRD_TOT and find a good agreement with the published SMDs.

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D. Burgarella, V. Buat, C. Gruppioni, O. Cucciati, S. Heinis, S. Berta, M. Bethermin, J. Bock, A. Cooray, J. S. Dunlop, D. Farrah, A. Franceschini, E. Le Floc'h, D. Lutz, B. Magnelli, R. Nordon, S. J. Oliver, M. J. Page, P. Popesso, F. Pozzi, L. Riguccini, M. Vaccari, M. Viero. 2013-05-01. On the redshift evolution (0 < z < 4) of dust attenuation and of the total (UV+IR) star formation rate density. https://doi.org/10.1051/0004-6361%2F201321651

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