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BLAST: Correlations in the Cosmic Far-Infrared Background at 250, 350, and 500 microns Reveal Clustering of Star-Forming Galaxies

Abstract : We detect correlations in the cosmic far-infrared background due to the clustering of star-forming galaxies, in observations made with the Balloon-borne Large Aperture Submillimeter Telescope (BLAST), at 250, 350, and 500 microns. Since the star-forming galaxies which make up the far-infrared background are expected to trace the underlying dark matter in a biased way, measuring clustering in the far-infrared background provides a way to relate star formation directly to structure formation. We test the plausibility of the result by fitting a simple halo model to the data. We derive an effective bias b_eff = 2.2 +/- 0.2, effective mass log(M_eff/M_sun) = 13.2 (+0.3/-0.8), and minimum mass log(M_min/M_sun) = 9.9 (+1.5/-1.7). This is the first robust clustering measurement at submillimeter wavelengths.
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http://hal.in2p3.fr/in2p3-00376755
Contributor : Simone Lantz <>
Submitted on : Monday, April 20, 2009 - 11:03:00 AM
Last modification on : Saturday, September 19, 2020 - 4:53:03 AM

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M.P. Viero, Peter A. R. Ade, James J. Bock, Edward L. Chapin, Mark J. Devlin, et al.. BLAST: Correlations in the Cosmic Far-Infrared Background at 250, 350, and 500 microns Reveal Clustering of Star-Forming Galaxies. The Astrophysical Journal, American Astronomical Society, 2009, 707, pp.1766-1778. ⟨10.1088/0004-637X/707/2/1766⟩. ⟨in2p3-00376755⟩

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