Spitzer Space Telescope - General Observer Proposal #30950


A Census of LIRGs in Clusters of Galaxies in the First Half of the
Universe from the IRAC Shallow Survey

Principal Investigator: Peter Eisenhardt
           Institution: JPL

Co-Investigators: 
Adam Stanford, UC Davis                                               
Mark Brodwin, JPL/Caltech                                             
Anthony Gonzalez, U. Florida                                          
Ranga-Ram Chary, SSC                                                  
Leonidas Moustakas, JPL/Caltech                                       
Edward Wright, UCLA                                                   
Daniel Stern, JPL/Caltech                                             
Roberto DePropris, CTIO                                               

Science Category: galaxy clusters and groups 
 Observing Modes: IracMap MipsPhot 
  Hours Approved: 19.8 

Abstract:
The incidence of LIRGs and ULIRGs is roughly two orders of magnitude
higher in the field at redshift z > 1, and at these redshifts such
objects dominate the global star formation activity.  Mergers which
fuel such activity might be expected to enhance the frequency of LIRGs
in dense environments.  We propose to use MIPS to obtain a census of
LIRGs in z > 1 galaxy clusters from a well defined sample found in the
IRAC Shallow Survey.  Supporting IRAC and HST ACS data are also
requested.