Physical properties of galaxies and their evolution in the VIMOS VLT Deep Survey: II. Extending the mass-metallicity relation to the range z ≈ 0.89'1.

E. Pérez-Montero, T. Contini, F. Lamareille, J. Brinchmann, C. J. Walcher, S. Charlot, M. Bolzonella, L. Pozzetti, D. Bottini, B. Garilli, V. Le Brun, O. Le Fèvre, D. MacCagni, R. Scaramella, M. Scodeggio, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. ArnoutsS. Bardelli, A. Cappi, P. Ciliegi, S. Foucaud, P. Franzetti, I. Gavignaud, L. Guzzo, O. Ilbert, A. Iovino, H. J. McCracken, B. Marano, C. Marinoni, A. Mazure, B. Meneux, R. Merighi, S. Paltani, R. Pellò, A. Pollo, M. Radovich, D. Vergani, G. Zamorani, E. Zucca

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Aims. We present a continuation of our study about the relation between stellar mass and gas-phase metallicity in the VIMOS VLT Deep Survey (VVDS). In this work we extend the determination of metallicities up to redshift ≈1.24 for a sample of 42 star-forming galaxies with a mean redshift value of 0.99.Methods. For a selected sample of emission-line galaxies, we use both diagnostic diagrams and empirical calibrations based on [Oii] emission lines along with the empirical relation between the intensities of the [Oiii] and [Neiii] emission lines and the theoretical ratios between Balmer recombination emission lines to identify star-forming galaxies and to derive their metallicities. We derive stellar masses by fitting the whole spectral energy distribution with a set of stellar population synthesis models.Results. These new methods allow us to extend the mass-metallicity relation to higher redshift. We show that the metallicity determinations are consistent with more established strong-line methods. Taken together this allows us to study the evolution of the mass-metallicity relation up to ≈ ≈ 1.24 with good control of systematic uncertainties. We find an evolution with redshift of the average metallicity of galaxies very similar to those reported in the literature: for a given stellar mass, galaxies at ≈ 1 have, on average, a metallicity ~ 0.3 dex lower than galaxies in the local universe. However we do not see any significant metallicity evolution between redshifts ≈ 0.7 (Paper I) and ≈ ~ 1.0 (this paper). We find also the same flattening of the mass-metallicity relation for the most massive galaxies as reported in Paper I at lower redshifts, but again no apparent evolution of the slope is seen between ≈ ~ 0.7 and ≈ ~ 1.0..

Original languageEnglish
Pages (from-to)73-81
Number of pages9
JournalAstronomy and Astrophysics
Volume495
Issue number1
DOIs
Publication statusPublished - Feb 2009

Keywords

  • Galaxies: abundances
  • Galaxies: evolution
  • Galaxies: fundamental parameters
  • Galaxies: starburst

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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