paper

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

arXiv:1102.2005 · doi:10.1017/S1743921311022952

Abstract

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.

Proceedings of "Tracing the Ancestry of Galaxies on the Land of our Ancestors", C. Carignan, K. Freeman & F. Combes, eds

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