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

2005/03/11 by Stephen Gwyn, S. D. J. Gwyn, F. D. A. Hartwick · 28 citations
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Hubble Deep Field #Hubble Ultra-Deep Field #Physics #Redshift #Star formation #Stellar mass #astro-ph

paper · pdf · doi:10.1086/432932

published in The Astronomical Journal 130(4), 1337-1344 (Institute of Physics) · 18 pages, 3 figures, submitted to AJ. Data at: http://orca.phys.uvic.ca/~gwyn/MMM/nicmos.html

arxiv created 2005/03/11 · openalex publication_date 2005/09/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We measure the buildup of the stellar mass of galaxies from z = 6 down 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 mag. 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.

Citations

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