The VIMOS-VLT deep survey: Evolution of the galaxy luminosity function up to z = 2 in first epoch data

O. Ilbert, L. Tresse, E. Zucca, S. Bardelli, S. Arnouts, G. Zamorani, L. Pozzetti, D. Bottini, B. Garilli, V. Le Brun, O. Le Fèvre, D. Maccagni, J. P. Picat, R. Scaramella, M. Scodeggio, G. Vettolani, A. Zanichelli, C. Adami, M. Arnaboldi, M. BolzonellaA. Cappi, S. Charlot, T. Contini, S. Foucaud, P. Franzetti, I. Gavignaud, L. Guzzo, A. Iovino, H. J. McCracken, B. Marano, C. Marinoni, G. Mathez, A. Mazure, B. Meneux, R. Merighi, S. Paltani, R. Pello, A. Pollo, M. Radovich, M. Bondi, A. Bongiorno, G. Busarello, P. Ciliegi, F. Lamareille, Y. Mellier, P. Merluzzi, V. Ripepi, D. Rizzo

Research output: Contribution to journalReview articlepeer-review

221 Citations (Scopus)

Abstract

We investigate the evolution of the galaxy luminosity function from the VIMOS-VLT Deep Survey (VVDS) from the present to z = 2 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 17.5 ≤ IAB ≤ 24.0, 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 z = 0.05 to z = 2, we measure a brightening of the characteristic magnitude M* included in the magnitude range 1.8-2.5, 1.7-2.4, 1.2-1.9, 1.1-1.8 and 1.0-1.6 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 (M ≤ M*(z = 0.1)). This density increases by a factor of around 2.6, 2.2, 1.8, 1.5, 1.5 between z = 0.05 and z =1 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 Δα ∼ -0.3 between z = 0.05 and z = 1, similar in all bands.

Original languageEnglish
Pages (from-to)863-876
Number of pages14
JournalAstronomy and Astrophysics
Volume439
Issue number3
DOIs
Publication statusPublished - Sep 2005

Keywords

  • Galaxies: evolution
  • Galaxies: luminosity function
  • Galaxies: statistics
  • Mass function
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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