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Radio and mid-infrared identification of BLAST source counterparts in the Chandra Deep Field South

Dye, Simon, Ade, Peter A.R., Bock, James J., Chapin, Edward L., Devlin, Mark J., Dunlop, James S., Eales, Stephen Anthony, Griffin, Matthew Joseph, Gundersen, Joshua O., Halpern, Mark, Hargrave, Peter Charles, Hughes, David H., Klein, Jeff, Magnelli, Benjamin, Marsden, Gaelen, Mauskopf, Philip Daniel, Moncelsi, Lorenzo, Netterfield, Calvin B., Olmi, Luca, Pascale, Enzo, Patanchon, Guillaume, Rex, Marie, Scott, Douglas, Semisch, Christopher, Targett, Tom, Thomas, Nicholas, Truch, Matthew D. P., Tucker, Carole Elizabeth, Tucker, Gregory S., Viero, Marco P. and Wiebe, Donald V. 2009. Radio and mid-infrared identification of BLAST source counterparts in the Chandra Deep Field South. Astrophysical Journal 703 (1) , pp. 285-299. 10.1088/0004-637X/703/1/285

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Abstract

We have identified radio and/or mid-infrared counterparts to 198 out of 350 sources detected at ≥5σ over ~9 deg2 centered on the Chandra Deep Field South by the Balloon-borne Large Aperture Submillimeter Telescope (BLAST) at 250, 350, and 500 μm. We have matched 114 of these counterparts to optical sources with previously derived photometric redshifts and fitted spectral energy distributions to the BLAST fluxes and fluxes at 70 and 160 μm acquired with the Spitzer Space Telescope. In this way, we have constrained dust temperatures, total far-infrared/submillimeter luminosities, and star formation rates for each source. Our findings show that, on average, the BLAST sources lie at significantly lower redshifts and have significantly lower rest-frame dust temperatures compared to submillimeter sources detected in surveys conducted at 850 μm. We demonstrate that an apparent increase in dust temperature with redshift in our sample arises as a result of selection effects. Finally, we provide the full multiwavelength catalog of ≥5σ BLAST sources contained within the complete ~9 deg2 survey area.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Uncontrolled Keywords: Cosmology: observations ; Galaxies: high-redshift ; Infrared: galaxies ; Submillimeter ; Surveys
Publisher: American Astronomical Society
ISSN: 0004-637X
Last Modified: 02 Jun 2019 22:45
URI: http://orca-mwe.cf.ac.uk/id/eprint/7277

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