Journal
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
Volume 154, Issue 1, Pages 130-136Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/423322
Keywords
cosmology : observations; galaxies : evolution; galaxies : high-redshift; infrared : galaxies
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We present Spitzer Space Telescope imaging observations at 3.6, 4.5, 5.8, 8.0, and 24 mum of the SCUBA submillimeter sources and muJy VLA radio sources in a 5' x 5' area in the Lockman Hole East region. Out of the similar to 40 SCUBA/VLA sources in the field, Spitzer counterparts were detected for nearly all except for the few low-weight SCUBA detections. We show that the majority (80% - 90%) of the detected sources are cold (i.e., starburst-like) infrared-luminous galaxies (L-IR > 10(11) L-.) at redshift 0.5 < z < 3.5, whose star-formation rate density (SFRD) is comparable to that of the optically selected star-forming galaxies.
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