EDP Sciences
Free access
Volume 367, Number 3, March I 2001
Page(s) 788 - 800
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20000466

A&A 367, 788-800 (2001)
DOI: 10.1051/0004-6361:20000466

The luminosity function of field galaxies and its evolution since $\vec{z=1}$

J. W. Fried, B. von Kuhlmann, K. Meisenheimer, H.-W. Rix, C. Wolf, H. H. Hippelein, M. Kümmel, S. Phleps, H. J. Röser, I. Thierring and C. Maier

Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany

(Received 17 August 2000 / Accepted 8 December 2000)

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 I815 = 22 without correction and with completeness correction extends to I815=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 $\delta z \le 0.03$. 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 the 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.

Key words: galaxies: evolution -- galaxies: luminosity function, mass function

Offprint request: J. W. Fried, fried@mpia-hd.mpg.de

SIMBAD Objects in preparation

© ESO 2001