Physics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20754e&link_type=abstract
Spitzer Proposal ID #20754
Physics
Scientific paper
We propose IRAC observations of a sample of 42 galaxy clusters at z>0.5 drawn from the Red-Sequence Cluster Survey (RCS). These observations will be used to calibrate the optical richness of clutsters in the RCS surveys to stellar mass. Extensive multiwavelength observations of the sample will then allow us to calculate the cluster mass function to z~1, providing important constraints on the nature of dark energy and its effect on the formation on large scale structure. We will also use these observations to form a stellar-mass limited sample of cluster galaxies which will allow us to address outstanding questions about the evolution of galaxies in dense cluster environments. In particular, we will identify whether the well-known Butcher-Oemler effect is caused primarily by normal star forming galaxies falling into the cluster, or by dwarf galaxies undergoing strong starbursts within the cluster environment.
Blindert Kris
Ellingson Erica E.
Gilbank David
Gladders Michael
Hoekstra Henk
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