Computer Science
Scientific paper
Feb 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009noao.prop..220w&link_type=abstract
NOAO Proposal ID #2009A-0220
Computer Science
Scientific paper
We are conducting a multi-wavelength study of a unique sample of galaxy clusters over the redshift range 0.3 < z < 1.1. A key component of this program is infrared imaging with the Spitzer Space Telescope at 24microns, which is sensitive to dust enshrouded star formation activity and active galactic nuclei (AGN). The intial results of this program indicate an increase in the number of infared luminous galaxies in clusters with redshift; however these results rely on statistical background subtraction and are dominated by cosmic variance. Here we propose to obtain deep spectroscopic observations of the infrared sources within the cluster fields, which are key to (i) studying the evolution of the infrared galaxy luminosity function within clusters with redshift, in comparison to the field, and as a function of cluster properties, such as mass and dynamicl state; and (ii) elucidating the nature and origin of the infrared galaxies in clusters, in the context of hierarchical formation and galaxy evolution in high-density regions. Our sample is unique in having the mass, redshift, and multi-wavelength coverage to address these important scientific issues.
Barrientos Felipe
Ellingson Erica E.
Faloon Ashley
Gilbank David
Gladders Mike
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