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The mass-metallicity relation of absorption selected high-redshift galaxies

Published online by Cambridge University Press:  21 March 2017

Lise Christensen ,
P. Møller ,
Henrik Rhodin ,
Jens-Kristian Krogager  and
Johan P.U. Fynbo
Lise Christensen
Affiliation:
Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen Juliane Maries Vej 30, 2100 Copenhagen, Denmark, email: lise@dark-cosmology.dk
P. Møller
Affiliation:
European Southern Observatory, Karl-Schwarzschildstrasse 2, D-85748 Garching bei München, Germany
Henrik Rhodin
Affiliation:
Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen Juliane Maries Vej 30, 2100 Copenhagen, Denmark, email: lise@dark-cosmology.dk
Jens-Kristian Krogager
Affiliation:
Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen Juliane Maries Vej 30, 2100 Copenhagen, Denmark, email: lise@dark-cosmology.dk Institut d’Astrophysique de Paris, CNRS-UPMC, UMR 7095, 98bis Bd Arago, 75014, Paris, France
Johan P.U. Fynbo
Affiliation:
Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen Juliane Maries Vej 30, 2100 Copenhagen, Denmark, email: lise@dark-cosmology.dk
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Abstract

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Strong absorption lines in quasar spectra primarily probe low-mass galaxies and detecting these in emission has previously been difficult. Dedicated surveys for the host galaxies of damped Lyman-α (DLA) systems have often resulted in non-detections and upper limits. Targeting the most metal-rich absorbers has proven to be a viable method, because these galaxies are brighter. By combining DLA metallicities and deriving host galaxy stellar masses, we find that metal-rich DLAs (with >10% solar metallicity) and their host galaxies follow the same redshift-dependent scaling relation between stellar mass and metallicity as luminosity-selected galaxies. We derive a prediction for an absorber galaxy mass that depends on the DLA metallicity.

Keywords

galaxies: abundancesgalaxies: high-redshiftquasars: absorption lines
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 357 - 359
Copyright
Copyright © International Astronomical Union 2017 

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