Computer Science
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3521h&link_type=abstract
Spitzer Proposal ID #3521
Computer Science
Scientific paper
Clusters of galaxies provide ideal environments for studies of galaxies due to the overdensities of all types of galaxies in a variety of environments. At a redshift of z=0.0228, Coma is the nearest rich cluster, a unique laboratory for studying evolution of galaxies. We select a 30 arcminute by 50 arcminute field located approximately one degree from the the center of Coma for moderate-depth IRAC imaging; the total requested AOR time is 6.9 hours. The Spitzer observations, combined with the available optical photometric and spectroscopic data as well as Chandra X-ray data will be used to uncover the galaxies missed in optical surveys, constructing a MIR luminosity function down to very low mass dwarf galaxies. We will also explore the infall regime and the effect of dust in forming different types of galaxies, and compare the star-formation rates estimated from X-ray and infrared data for a well calibrated sample. The IRAC exposure time is 108~seconds per field of view; we will detect very low luminosity dwarf galaxies. This dataset complements the Guaranteed Time programs of the Spitzer instrument teams, which focus on the center of Coma.
Alexander David
Heckman Timothy
Hornschemeier Ann
Mobasher Bahram
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