The Stellar Mass Evolution of Galaxies in the NICMOS Ultra Deep Field

Details The Stellar Mass Evolution of Galaxies in the NICMOS Ultra Deep Field The Stellar Mass Evolution of Galaxies in the NICMOS Ultra Deep Field

2005-03-11

arxiv.org/abs/astro-ph/0503275v1

Astron.J.130:1337-1344,2005

Astronomy and Astrophysics

Astrophysics

18 pages, 3 figures, submitted to AJ. Data at: http://orca.phys.uvic.ca/~gwyn/MMM/nicmos.html

Scientific paper

10.1086/432932

We measure the build-up of the stellar mass of galaxies from z=6 to z=1. Using 15 band multicolor imaging data in the NICMOS Ultra Deep Field we derive photometric redshifts and masses for 796 galaxies down to H(AB)=26.5. The derived evolution of the global stellar mass density of galaxies is consistent with previous star formation rate density measurements over the observed range of redshifts. Beyond the observed range, maintaining consistency between the global stellar mass and the observed star formation rate suggests the epoch of galaxy formation was z=16.

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