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arXiv · 0709.1354

The stellar mass assembly of galaxies from z=0 to z=4. Analysis of a sample selected in the rest-frame near-infrared with Spitzer

Pablo G. Perez-Gonzalez·George H. Rieke·Victor Villar·Guillermo Barro·Myra Blaylock·Eiichi Egami·Jesus Gallego·Armando Gil de Paz·Sergio Pascual·Jaime Zamorano·Jennifer L. Donley
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Abstract

Using a sample of ~28,000 sources selected at 3.6-4.5 microns with Spitzer observations of the HDF-N, the CDF-S, and the Lockman Hole (surveyed area: ~664 arcmin^2), we study the evolution of the stellar mass content of the Universe at 0 10^12.0 M_sun) assembled the bulk of their stellar content rapidly (in 1-2 Gyr) beyond z~3 in very intense star formation events (producing high specific SFRs). Galaxies with 10^11.5 2.5 is dominated by optically faint (R>25) red galaxies (Distant Red Galaxies or BzK sources) which account for ~30% of the global population of galaxies, but contribute at least 60% to the cosmic stellar mass density. Bluer galaxies (e.g., Lyman Break Galaxies) are more numerous but less massive, contributing less than 50% to the global stellar mass density at high redshift.

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Pablo G. Perez-Gonzalez, George H. Rieke, Victor Villar, Guillermo Barro, Myra Blaylock, Eiichi Egami, Jesus Gallego, Armando Gil de Paz, Sergio Pascual, Jaime Zamorano, Jennifer L. Donley. 2008-03-25. The stellar mass assembly of galaxies from z=0 to z=4. Analysis of a sample selected in the rest-frame near-infrared with Spitzer. https://doi.org/10.1086/523690

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