[63.07] The 70um-Selected Galaxies in the Spitzer First Look Survey

AAS 205th Meeting, 9-13 January 2005
Session 63 Spitzer Views on Galaxy Evolution
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

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[63.07] The 70um-Selected Galaxies in the Spitzer First Look Survey

D. T. Frayer (SSC/Caltech), First Look Survey Team

We report on the infrared properties of the 70um-selected sample of sources in the Spitzer extragalactic First Look Survey. As a whole, about 90% of the population show infrared colors that are consistent with the spectral energy distributions of the local IRAS population of luminous infrared starbursts, while approximately 10% of the sample show warm infrared colors consistent with AGN activity. The mean redshift for the population is about z=0.2. For galaxies detected in 70um at z>0.5, the fraction of sources with warm infrared colors increases significantly. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407.

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