The galaxy cluster AC114-II. Stellar populations and the mass-metallicity relation
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Date
2023-12-01
Profesor/a GuÃa
Facultad/escuela
Idioma
en
Journal Title
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Volume Title
Publisher
Oxford University Press
Nombre de Curso
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Abstract
We investigate the mass-metallicity relation (MZR)for galaxies in the Abell cluster AC114 from 7 h of VIMOS/MR data collected at the European Southern Observatory-Very Large Telescope in 2009. The dynamical analysis completed in our previous paper allowed us to select cluster members, whose spectra are here analysed with stellar population synthesis models. Active and passive galaxies are identified based on the presence/absence of the [O ii] λ3727, [O iii] λλ4959, 5007 and/or Hβ emission lines, depending on the galaxy redshift. We find that active galaxies have lower average masses than passive ones, and have lower average metallicities. The MZR of the cluster is found to be steeper than that for galaxies in the local universe. © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
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INDEXACIÓN: SCOPUS.
Keywords
galaxies: Abundances, galaxies: clusters: general, galaxies: distances and redshifts, galaxies: stellar content
Citation
Monthly Notices of the Royal Astronomical Society, Volume 526, Issue 2, Pages 2458 - 2478, 1 December 2023
DOI
10.1093/mnras/stad2620