The Evolutionary Status of Early-type Galaxies in Abell 2390 |
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Authors: | A Fritz BL Ziegler RG Bower I Smail RL Davies |
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Institution: | 1. Universit?tssternwarte G?ttingen, Geismarlandstr. 11, D-37083, G?ttingen, Germany 2. Department of Physics, University of Durham, Durham, DH1 3LE, UK
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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≤MB≤–:19.3)and a wide field of view (10′×10′), 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.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | galaxies elliptical and lenticular evolution formation fundamental parameters cluster of galaxies Abell 2390 |
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