Evolu. star mass-metallicity relation. II. Virtual Observatory Resource

Authors
  1. Leethochawalit N.
  2. Kirby E.N.
  3. Ellis R.S.
  4. Moran S.M.
  5. Treu T.
  6. Published by
    CDS
Abstract

We present the stellar mass-[Fe/H] and mass-[Mg/H] relation of quiescent galaxies in two galaxy clusters at z~0.39 and z~0.54. We derive the age, [Fe/H], and [Mg/Fe] for each individual galaxy using a full-spectrum fitting technique. By comparing with the relations for z~0 Sloan Digital Sky Survey galaxies, we confirm our previous finding that the mass-[Fe/H] relation evolves with redshift. The mass-[Fe/H] relation at higher redshift has lower normalization and possibly steeper slope. However, based on our sample, the mass-[Mg/H] relation does not evolve over the observed redshift range. We use a simple analytic chemical evolution model to constrain the average outflow that these galaxies experience over their lifetime, via the calculation of mass-loading factor. We find that the average mass-loading factor {eta} is a power-law function of galaxy stellar mass, {eta}{prop}M*^-0.21{+/-}0.09^. The measured mass-loading factors are consistent with the results of other observational methods for outflow measurements and with the predictions where outflow is caused by star formation feedback in turbulent disks.

Keywords
  1. Galaxy clusters
  2. Chemical abundances
  3. Metallicity
  4. Stellar ages
  5. Stellar masses
  6. Optical astronomy
  7. Spectroscopy
  8. Ultraviolet photometry
  9. Infrared photometry
Bibliographic source Bibcode
2019ApJ...885..100L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/885/100
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/885/100
Document Object Identifer DOI
doi:10.26093/cds/vizier.18850100

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History

2021-09-28T06:31:25Z
Resource record created
2021-09-28T06:31:25Z
Created
2022-07-25T09:23:11Z
Updated

Contact

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CDS support team
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