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Galaxies in most dense environments at redshift 1.4

Published online by Cambridge University Press:  17 July 2013

V. Strazzullo*
Affiliation:
Irfu/SAp, CEA-Saclay, Orme des Merisiers, 91191 Gif sur Yvette, France email: [email protected]
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Abstract

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At a cosmic time when galaxy clusters start showing evidence of a still active galaxy population, the X-ray luminous, massive cluster XMMU J2235-2557 at z=1.39, already hosts massive, quiescent, early-type galaxies on a tight red sequence dominating the cluster core. XMMU J2235-2557 is among the most massive of the very distant clusters, which may explain the evolved status of the system itself, and of its host galaxy populations. It remains a unique laboratory to observe environment-biased galaxy evolution already 9 billion years ago.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013