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A detailed view of the Fundamental Plane of early–type galaxies in clusters at z$\sim$0.2

Published online by Cambridge University Press:  06 October 2004

Alexander Fritz
Affiliation:
Universitäts–Sternwarte Göttingen, Geismarlandstraße 11, 37083 Göttingen, Germany email: afritz@uni-sw.gwdg.de
Bodo L. Ziegler
Affiliation:
Universitäts–Sternwarte Göttingen, Geismarlandstraße 11, 37083 Göttingen, Germany email: afritz@uni-sw.gwdg.de
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Abstract

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We present a spectroscopic sample of 48 early-type galaxies in the rich cluster Abell 2218 and 50 galaxies in Abell 2390. Since both samples are very similar, we combine them and investigate a total number of 98 early-type galaxies at $z \sim 0.2$. A subsample of 34 galaxies with HST structural properties is used to construct the Fundamental Plane. Elliptical and S0 galaxies show a zeropoint offset of $\overline{m}_{r}\sim0.43$ mag with respect to the local Coma FP. Both sub-samples, ellipticals and lenticulars, exhibit a similar, mild evolution and small scatter. The moderate amount of luminosity evolution is consistent with stellar population models of passive evolution, if $z_{f}\ge2$ is assumed.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2004 International Astronomical Union