Infrared Properties of Radio-selected Submillimeter Galaxies in the Spitzer First Look Survey Verification Field
Abstract
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 (S70μm/S24μm<5-30, S8μm/S3.6μm<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.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- September 2004
- DOI:
- 10.1086/423250
- arXiv:
- arXiv:astro-ph/0406351
- Bibcode:
- 2004ApJS..154..137F
- Keywords:
-
- Galaxies: Active;
- Galaxies: Evolution;
- Galaxies: Formation;
- Galaxies: Starburst;
- Infrared: Galaxies;
- Astrophysics
- E-Print:
- Accepted for Spitzer ApJS Special Edition, 12 pages including 4 figures and 1 table