The population of galaxies in the forming cluster around the radio galaxy MRC 1138-262 at z=2.2

Details The population of galaxies in the forming cluster around the radio galaxy MRC 1138-262 at z=2.2 The population of galaxies in the forming cluster around the radio galaxy MRC 1138-262 at z=2.2

2001-10-09

arxiv.org/abs/astro-ph/0110223v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, to appear in the proceedings of the meeting "Tracing cosmic evolution with galaxy clusters" (Sesto Pusteri

Scientific paper

We have recently discovered a forming cluster around the radio galaxy MRC 1138-262 at redshift 2.2. Besides the population of Ly alpha emitting galaxies that have been confirmed spectroscopically, we have detected many candidate H alpha emitters that seem to have a different spatial distribution from the other galaxies: they are more clustered towards the center of the cluster and seem to be distributed along the same direction as the radio source. We present here the characteristics of the Ly alpha and H alpha emitters and study the nature of these populations.

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