The Luminosity Function Of Field Galaxies And Its Evolution Since z=1
Abstract
We present the B-band luminosity function and comoving space and luminosity densities for a sample of 2779 I-band selected field galaxies based on multi-color data from the CADIS survey. The sample is complete down to I_815 = 22 without correction and with completeness correction extends to I_815=23.0. By means of a new multi-color analysis the objects are classified according to their spectral energy distributions (SEDs) and their redshifts are determined with typical errors of delta z <= 0.03. We have split our sample into four redshift bins between z=0.1 and z=1.04 and into three SED bins E-Sa,Sa-Sc and starbursting (emission line) galaxies. The evolution of the luminosity function is clearly differential with SED. The normalization phi* of luminosity function for the E-Sa galaxies decreases towards higher redshift, and we find evidence that the comoving galaxy space density decreases with redshift as well. In contrast, we find phi* and the comoving space density increasing with redshift for the Sa-Sc galaxies. For the starburst galaxies we find a steepening of the luminosity function at the faint end and their comoving space density increases with redshift.
Keywords
Cite
@article{arxiv.astro-ph/0012343,
title = {The Luminosity Function Of Field Galaxies And Its Evolution Since z=1},
author = {J. W. Fried and B. von Kuhlmann and K. Meisenheimer and H. -W. Rix and C. Wolf and H. H. Hippelein and M. Kümmel and S. Phleps and H. J. Röser and I. Thierring and C. Maier},
journal= {arXiv preprint arXiv:astro-ph/0012343},
year = {2009}
}
Comments
15 pages, 14 figures, accepted by Astronomy&Astrophysics