Issue |
A&A
Volume 439, Number 3, September I 2005
|
|
---|---|---|
Page(s) | 863 - 876 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361:20041961 | |
Published online | 12 August 2005 |
The VIMOS-VLT deep survey
Evolution of the galaxy luminosity function up to z = 2 in first epoch data
1
Laboratoire d'Astrophysique de Marseille (UMR 6110), CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, France e-mail: Olivier.Ilbert@oamp.fr
2
INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy
3
INAF-IASF, via Bassini 15, 20133 Milano, Italy
4
Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (UMR 5572), CNRS-Université Paul Sabatier, 14 avenue E. Belin, 31400 Toulouse, France
5
INAF-IRA, via Gobetti 101, 40129 Bologna, Italy
6
INAF – Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy
7
Università di Bologna, Dipartimento di Astronomia, via Ranzani 1, 40127 Bologna, Italy
8
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85740 Garching bei München, Germany
9
Institut d'Astrophysique de Paris (UMR 7095), 98bis boulevard Arago, 75014 Paris, France
10
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
11
INAF – Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy
12
Observatoire de Paris-LERMA, 61 avenue de l'Observatoire, 75014 Paris, France
Received:
6
September
2004
Accepted:
31
January
2005
We investigate the evolution of the galaxy luminosity function from the VIMOS-VLT Deep Survey (VVDS) from the present to in five (U, B, V, R and I) rest-frame band-passes. We use the first epoch VVDS deep sample of 11 034 spectra selected at
, on which we apply the Algorithm for Luminosity Function (ALF), described in this paper. We observe a substantial evolution with redshift of the global luminosity functions in all bands. From
to
, we measure a brightening of the characteristic magnitude M* included in the magnitude range
,
,
,
and
in the U, B, V, R and I rest-frame bands, respectively. We confirm this differential evolution of the luminosity function with rest-frame wavelength from the measurement of the comoving density of bright galaxies (
). This density increases by a factor of around
between
and
in the U, B, V, R, I bands, respectively. We also measure a possible steepening of the faint-end slope of the luminosity functions, with
between
and
, similar in all bands.
Key words: surveys / galaxies: evolution / galaxies: luminosity function / mass function / galaxies: statistics
© ESO, 2005
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