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Astronomy Tea Talks at Caltech

Mondays, Robinson 106
Tea:  4.00pm
Talk: 4.15pm

Organised by:

2007 - 2008 season:
3 December 2007 Yeng-Tin Lin (Princeton)

"Fundamental properties of cluster galaxies and their redshift evolution "

Galaxy clusters represent an excellent laboratory for understanding
various processes involving the galaxies, the dark matter potential, and
the hot intracluster medium. Furthermore, in light of the on-going large
scale cluster surveys (e.g. ACT, SPT, APEX-SZ), it is of critical
importance that we understand the evolution of clusters towards z~1.

I will present a detailed analysis of several fundamental properties
(spatial distribution, luminosity function, mass-observable scaling
relations) for various classes of cluster galaxies, including the blue and
red galaxies, AGNs, and brightest cluster galaxies, based on large samples
of clusters at z<0.2. In particular, the relevance of these observations
to the halo occupation distribution formalism, the evolution of cluster
galaxies, and the environmental dependence of the radio-loud AGN
phenomenon, will be discussed. Finally, the redshift evolution of the
cluster galaxy population out to z=0.9 is studied in terms of the luminous
red galaxies, as well as the scaling relations.
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Last modified on 20th Jul 2011 by Johan Richard.  

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