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The Properties of Brightest Cluster Galaxies in X-Ray Selected Clusters

Sarah Brough·Chris A. Collins·Doug J. Burke·Paul D. Lynam·Robert G. Mann
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Abstract

We present the K-band Hubble diagram for 162 brightest cluster galaxies (BCGs) in X-ray selected clusters, 0.01<z<0.83. The sample incorporates that of Burke, Collins, & Mann (2000) and includes additional infrared data from the 2MASS extended source catalogue. We show that below z=0.1 the BCGs show no correlation with their environment, however, above z=0.1 BCGs in more X-ray luminous clusters are more uniform in their photometric properties. This suggests that there may be two populations of BCGs which have different evolutionary histories.

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Sarah Brough, Chris A. Collins, Doug J. Burke, Paul D. Lynam, Robert G. Mann. 2001-08-10. The Properties of Brightest Cluster Galaxies in X-Ray Selected Clusters. https://arxiv.org/abs/astro-ph/0108186

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