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

  • Lise Christensen (a1), P. Møller (a2), Henrik Rhodin (a1), Jens-Kristian Krogager (a1) (a3) and Johan P.U. Fynbo (a1)...

Abstract

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.

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References

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Keywords

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

  • Lise Christensen (a1), P. Møller (a2), Henrik Rhodin (a1), Jens-Kristian Krogager (a1) (a3) and Johan P.U. Fynbo (a1)...

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