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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 225820.0, MPI für Astronomie / Publikationen_mpia
The metallicity-luminosity relation at medium
redshift based on faint CADIS emission line
galaxies
Authors:Maier, C.; Meisenheimer, K.; Hippelein, H.
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Astronomy and Astrophysics
Volume:418
Start Page:475
End Page:485
Review Status:not specified
Audience:Not Specified
Abstract / Description: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
MB ‚‚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 MB ‚‚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 P‚‚eacute;gase2 chemical evolution
models we have found a favoured scenario in
which the metallicity of galaxies increases by a
factor of ‚‚sim;2 between z ‚‚sim; 0.7 and today,
and their luminosity decreases by ‚‚sim;0.5-0.9
mag.
Free Keywords:galaxies: high-redshift; galaxies: abundances
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:K‚‚ouml;nigstuhl 17, 69117 Heidelberg, Germany;
Department of Physics, Swiss Federal Institute of
Technology (ETH Z‚‚uuml;rich), ETH
H‚‚ouml;nggerberg, 8093, Z‚‚uuml;rich,
Switzerland), AB(Max-Planck-Institut f‚‚uuml;r
Astronomie, K‚‚ouml;nigstuhl 17, 69117
Heidelberg, Germany), AC(Max-Planck-Institut
f‚‚uuml;r Astronomie, K‚‚ouml;nigstuhl 17, 69117
Heidelberg, Germany)
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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