EDP Sciences
Free access
Issue
A&A
Volume 418, Number 2, May I 2004
Page(s) 475 - 485
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20035795


A&A 418, 475-485 (2004)
DOI: 10.1051/0004-6361:20035795

The metallicity-luminosity relation at medium redshift based on faint CADIS emission line galaxies

C. Maier1, 2, K. Meisenheimer1 and H. Hippelein1

1  Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
2  Department of Physics, Swiss Federal Institute of Technology (ETH Zürich), ETH Hönggerberg, 8093, Zürich, Switzerland

(Received 3 December 2003 / Accepted 28 January 2004)

Abstract
The emission line survey within the Calar Alto Deep Imaging Survey (CADIS) detects galaxies with very low continuum brightness by using an imaging Fabry-Perot interferometer. With spectroscopic follow-up observations of ${M}_{{B}} \ga -19$ CADIS galaxies using FORS2 at the VLT and DOLORES at TNG we obtained oxygen abundances of 5 galaxies at  $z \sim 0.4$ and 10 galaxies at $z \sim 0.64$. Combining these measurements with published oxygen abundances of galaxies with ${M}_{{B}} \la -19$ we find evidence that a metallicity-luminosity relation exists at medium redshift, but it is displaced to lower abundances and higher luminosities compared to the metallicity-luminosity relation in the local universe. Comparing the observed metallicities and luminosities of galaxies at $z \la 3$ with Pégase2 chemical evolution models we have found a favoured scenario in which the metallicity of galaxies increases by a factor of ~ 2 between $z \sim 0.7$ and today, and their luminosity decreases by ~ 0.5-0.9 mag.


Key words: galaxies: high-redshift -- galaxies: abundances

Offprint request: C. Maier, chmaier@phys.ethz.ch

SIMBAD Objects



© ESO 2004

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.