CfA OIR Division Lunch Talks

Thursday, April 17, 2008, 12:30 pm, Pratt Conference Room

Hectospec and Galaxy Clusters

Dr. Ken Rines (CfA)

Galaxy clusters are surrounded by infall regions where galaxies are bound to the cluster but have not yet virialized. These infall regions are the largest bound structures in the universe. I will discuss how the dynamics of cluster galaxies can constrain cosmological parameters. A Hectospec survey of massive clusters should soon improve these constraints, while simultaneously providing valuable information on the structure and evolution of infall regions and the evolution of cluster galaxies.

Galaxy cluster ssc2007-13a1