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The Evolutionary Status of Early-type Galaxies in Abell 2390

Alexander Fritz·Bodo L. Ziegler·Richard G. Bower·Ian Smail·Roger L. Davies
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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.

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Alexander Fritz, Bodo L. Ziegler, Richard G. Bower, Ian Smail, Roger L. Davies. 2003-02-04. The Evolutionary Status of Early-type Galaxies in Abell 2390. https://doi.org/10.1023/a%3A1024665927138

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