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Published September 2004 | Published + Submitted
Journal Article Open

Infrared Properties of Radio‐selected Submillimeter Galaxies in the Spitzer First Look Survey Verification Field


We report on submillimeter and infrared observations of 28 radio-selected galaxies in the Spitzer First Look Survey verification field. All of the radio-selected galaxies that show evidence for emission at 850 μm with SCUBA have Spitzer counterparts at 24 μm, while only half of the radio-selected galaxies without 850 μm emission have detectable counterparts at 24 μm. The data show a wide range of infrared colors (S_(70 μm)/S_(24 μm) < 5-30, S_(8 μm)/S_(3.6 μm) < 0.3-4), indicative of a mixture of infrared-warm AGN-dominated and cooler starburst-dominated sources. The galaxies showing 850 μm emission have Spitzer flux densities and flux density ratios consistent with the range of values expected for high-redshift (z = 1-4) ultraluminous infrared galaxies.

Additional Information

© 2004 The American Astronomical Society. Received 2004 March 27; accepted 2004 June 7. We thank the staff at the JCMT and the Spitzer Science Center for their support of these observations. 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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Published - Frayer_2004_ApJS_154_137.pdf

Submitted - 0406351.pdf


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