The Evolutionary Status of Early-type Galaxies in Abell 2390
Abstract
We explore the evolution of the early-type galaxy population in the rich cluster Abell 2390 at z=0.23. For this purpose, we have obtained spectroscopic data of 51 elliptical and lenticular galaxies with MOSCA at the 3.5 m telescope on Calar Alto Observatory. As our investigation spans both a broad range in luminosity (-22.3<M_B<-19.3) and a wide field of view (10'x10'), the environmental dependence of different formation scenarios can be analysed in detail as a function of radius from the cluster center. In this paper, we present first results on the Faber-Jackson relation and, for a subsample of 14 galaxies with morphological and structural parameters from HST, we also investigate the evolution of the Kormendy relation and the Fundamental Plane. We find a mild luminosity evolution of the early-type galaxies in Abell 2390: our objects are on average brighter by m_B~0.4 mag.
Cite
@article{arxiv.astro-ph/0302052,
title = {The Evolutionary Status of Early-type Galaxies in Abell 2390},
author = {Alexander Fritz and Bodo L. Ziegler and Richard G. Bower and Ian Smail and Roger L. Davies},
journal= {arXiv preprint arXiv:astro-ph/0302052},
year = {2009}
}
Comments
6 pages, 4 figures, to appear in the proceedings of the JENAM 2002 Workshop WS-GE "Galaxy Evolution in Groups and Clusters", Eds. by C. Lobo, M. Serote Roos, A. Biviano, Ap&SS, Kluwer, in press; oral contribution, held in Porto, Portugal, September 2-7, 2002