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Published December 2006 | Published
Journal Article Open

Deep ATLAS Radio Observations of the Chandra Deep Field-South/Spitzer Wide-Area Infrared Extragalactic Field

Abstract

We present the first results from the Australia Telescope Large Area Survey, which consists of deep radio observations of a 3.7 deg^2 field surrounding the Chandra Deep Field-South, largely coincident with the infrared Spitzer Wide-Area Infrared Extragalactic (SWIRE) Survey. We also list cross-identifications to infrared and optical photometry data from SWIRE, and ground-based optical spectroscopy. A total of 784 radio components are identified, corresponding to 726 distinct radio sources, nearly all of which are identified with SWIRE sources. Of the radio sources with measured redshifts, most lie in the redshift range 0.5-2 and include both star-forming galaxies and active galactic nuclei. We identify a rare population of infrared-faint radio sources that are bright at radio wavelengths but are not seen in the available optical, infrared, or X-ray data. Such rare classes of sources can only be discovered in wide, deep surveys such as this.

Additional Information

© 2006 American Astronomical Society. Received 2006 June 18; accepted 2006 August 2. We thank Jim Condon for helpful comments on this paper. R. P. N. gratefully acknowledges ''Visiting Scientist'' support from the Spitzer Science Center, J. A. gratefully acknowledges support from the Science and Technology Foundation (Portugal) through research grant POCTI/CTE-AST/58027/2004, and I.R. S. acknowledges support from the Royal Society. The Australia Telescope Compact Array is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This research has made use of the NASA/ IPAC Extragalactic Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has also made use of the VizieR catalog access tool, CDS, Strasbourg, France.

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August 22, 2023
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