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Institute for the Physics and Mathematics of the UniverseWPI

Ensemble properties of cluster galaxies and their redshift evolution

Date: April 4, 2008, from 15:30
Place: Room 633, 6th floor, Research Centers Building, Kashiwa Campus of the University of Tokyo.
Speaker: Yen-Ting Lin (Princeton)
Title: Ensemble properties of cluster galaxies and their redshift evolution
Abstract: 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, AMiBA), 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 cluster galaxies, trying to answer the following questions: (1) How are cluster galaxies assembled in the context of hierarchical structure formation? (2) What is the redshift evolution of the cluster galaxy population? (3) How is the radio-loud AGN phenomenon related to cluster galaxies, and what might be the origin of the radio activity?