The galaxy cluster AC114-II. Stellar populations and the mass-metallicity relation

被引：1

作者：

Saviane, Ivo ^{[1
]}

Yegorova, Irina ^{[2
]}

Proust, Dominique ^{[3
]}

机构：

[1] European Southern Observ, Alonso Cordova 3107,Casilla 19001, Santiago 19, Chile

[2] Univ Andres Bello, Dept Ciencias Fis, Fernandez Concha 700, Santiago, Chile

[3] Observ Paris, GEPI, F-92195 Meudon, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 526卷 / 02期

关键词：

galaxies: abundances; galaxies: clusters: general; galaxies: distances and redshifts; galaxies: stellar content; HUBBLE-SPACE-TELESCOPE; STAR-FORMATION; DARK-MATTER; EVOLUTION; AC-114; CONSTRAINTS; CATALOG; ORIGIN; CORE;

D O I：

10.1093/mnras/stad2620

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 [OII lambda 3727, [OIII]lambda lambda 4959, 5007 and/or H beta 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.

引用

页码：2458 / 2478

页数：21

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