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The build-up of mass in UV-selected sub-L* Galaxies at z~2

Published online by Cambridge University Press:  05 December 2011

Marcin Sawicki
Marcin Sawicki*
Affiliation:
Saint Mary's University, Halifax, Canadasawicki@ap.smu.ca
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Abstract

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Broadband spectral energy distribution (SED) fitting is used to study a deep sample of UV-selected sub-L* galaxies at z~2. They are found to be less dusty than L* galaxies, and to contribute more mass to the cosmic mass budget at this epoch than is inferred from shallower high-z surveys. Additionally, SFRs are found to be proportional to stellar masses over three orders of magnitude in mass; this phenomenon can be explained by assuming that new stars form out of gas that co-accretes along with dark matter onto the galaxies' dark matter halos, a scenario that naturally leads to SFRs that gradually increase with time.

Keywords

galaxies: evolutiongalaxies: high-redshift
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S277: Tracing the Ancestry of Galaxies (on the land of our ancestors) , December 2010 , pp. 287 - 290
Copyright
Copyright © International Astronomical Union 2011

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