Galaxies of Redshift z > 5: The View from Stony Brook

Details Galaxies of Redshift z > 5: The View from Stony Brook Galaxies of Redshift z > 5: The View from Stony Brook

1999-10-29

arxiv.org/abs/astro-ph/9910554v1

Astronomy and Astrophysics

Astrophysics

10 pages, 6 figures, includes style file, to appear in "The Hy-Redshift Universe: Galaxy Formation and Evolution at High Redsh

Scientific paper

We report on some aspects of our efforts to establish properties of the extremely faint galaxy population by applying our photometric redshift technique to the HDF and HDF-S WFPC2 and NICMOS fields. We find that cosmological surface brightness dimming effects play a dominant role in setting what is observed at redshifts z > 2, that the comoving number density of high intrinsic surface brightness regions increases monotonically with increasing redshift, and that previous estimates neglect a significant or dominant fraction of the ultraviolet luminosity density of the universe due to surface brightness effects. The ultraviolet luminosity density of the universe plausibly increases monotonically with increasing redshift to redshifts beyond z = 5.

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