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The Star Formation History and Stellar Assembly of High Redshift Galaxies

Published online by Cambridge University Press:  01 August 2006

Casey Papovich
Casey Papovich*
Affiliation:
Steward Observatory, 933 North Cherry Avenue, Tucson, Arizona, 85721, USA email: papovich@as.arizona.edu
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Abstract

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I discuss current observational constraints on the star-formation and stellar-assembly histories of galaxies at high redshifts. The data on massive galaxies at z < 1 implies that their stellar populations formed at z>2, and that their morphological configuration was in place soon thereafter. Spitzer Space Telescope 24 μ observations indicate that a substantial fraction of massive galaxies at z ~ 1.5–3 have high IR luminosities, suggesting they are rapidly forming stars, accreting material onto supermassive black holes, or both. I compare how observations of these IR–active phases in the histories of massive galaxies constrain current galaxy–formation models.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: high-redshiftinfrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 341 - 344
Copyright
Copyright © International Astronomical Union 2007

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