AAS 197, January 2001
Session 117. Galaxy Evolution: The Hubble Deep Fields
Oral, Thursday, January 11, 2001, 10:30am-12:00noon, Golden Ballroom

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[117.04] Properties of Faint Galaxies at High Redshift

N. Yahata, K. M. Lanzetta, A. Fernandez-Soto, S. M. Pascarelle (SUNY at Stony Brook), H.-W. Chen (OCIW)

We present a survey of faint galaxy population toward high redshifts by applying our quasi-optimal photometry and photometric redshift techniques to the Hubble Deep Field (HDF), HDF--S WFPC2, and HDF--S NICMOS fields. We have analyzed all available space- and ground-based images of HDFs and have identified nearly 4000 galaxies over the range in redshift 0 < z < 10 and beyond. First, we demonstrate that photometric redshift measurements are robust and reliable, thereby providing a means to identify redshifts of galaxies down to faint magnitudes. Next, on the basis of this unique sample of galaxies, we discuss the properties of faint galaxy population toward high redshifts. The main results will be related to the following topics: (1) surface number density of galaxies, (2) star formation rate intensity and ultraviolet luminosity density as a function of redshift, and (3) connection between high-redshift galaxies and high column density gas. This work was supported by NASA grant NAGW--4422 and NSF grant AST--9624216.

The author(s) of this abstract have provided an email address for comments about the abstract: nyahata@sbastr.ess.sunysb.edu

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