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

doi:10.1111/j.1745-3933.2008.00442.x

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

School of Physics and Astronomy

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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 language	English
Pages (from-to)	L103-L107
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	385
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2008.00442.x
Publication status	Published - 1 Mar 2008

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10.1111/j.1745-3933.2008.00442.x

http://adsabs.harvard.edu/abs/2008MNRAS.385L.103B

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title = "The luminosity-halo mass relation for brightest cluster galaxies",

abstract = "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.",

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T1 - The luminosity-halo mass relation for brightest cluster galaxies

AU - Brough, S.

AU - Couch, W. J.

AU - Collins, C. A.

AU - Jarrett, T.

AU - Burke, D. J.

AU - Mann, R. G.

PY - 2008/3/1

Y1 - 2008/3/1

N2 - 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.

AB - 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.

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DO - 10.1111/j.1745-3933.2008.00442.x

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VL - 385

SP - L103-L107

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

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The luminosity-halo mass relation for brightest cluster galaxies

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