The luminosity-halo mass relation for brightest cluster galaxies

S. Brough, W. J. Couch, C. A. Collins, T. Jarrett, D. J. Burke, R. G. Mann

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We examine the central galaxy luminosity-host halo mass relation for 54 brightest group galaxies (BGGs) and 92 brightest cluster galaxies (BCGs) at z <0.1 and present the first measurement of this relation for a sample of known BCGs at . At z <0.1 we find LK ~ M0.24+/-0.08200 for the BCGs and the early-type BGGs in groups with extended X-ray emission and LK ~ M0.11+/-0.10200 for the BCGs alone. At 0.1 <z <0.8 we find LK ~ M0.28+/-0.11200. We conclude that there is no evidence for evolution in this relationship between z <0.1 and z <0.8: BCG growth appears to still be limited by the time-scale for dynamical friction at these earlier times, not proceeding according to the predictions of present semi-analytic models.
Original languageEnglish
Pages (from-to)L103-L107
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - 1 Mar 2008


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