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Herschel-ATLAS: Dust Temperature and Redshift Distribution of SPIRE and PACS Detected Sources Using Submillimetre ColoursWe present colour-colour diagrams of detected sources in the Herschel-ATLAS Science Demonstration Field from 100 to 500/microns using both PACS and SPIRE. We fit isothermal modified-blackbody spectral energy distribution (SED) models in order to extract the dust temperature of sources with counterparts in GAMA or SDSS with either a spectroscopic or a photometric redshift. For a subsample of 331 sources detected in at least three FIR bands with significance greater than 30 sigma, we find an average dust temperature of (28 plus or minus 8)K. For sources with no known redshifts, we populate the colour-colour diagram with a large number of SEDs generated with a broad range of dust temperatures and emissivity parameters and compare to colours of observed sources to establish the redshift distribution of those samples. For another subsample of 1686 sources with fluxes above 35 mJy at 350 microns and detected at 250 and 500 microns with a significance greater than 3sigma, we find an average redshift of 2.2 plus or minus 0.6.
Document ID
Document Type
Preprint (Draft being sent to journal)
Amblard, A. (California Univ. Irvine, CA, United States)
Cooray, Asantha (California Univ. Irvine, CA, United States)
Serra, P. (California Univ. Irvine, CA, United States)
Temi, P. (NASA Ames Research Center Moffett Field, CA, United States)
Barton, E. (California Univ. Irvine, CA, United States)
Negrello, M. (Open Univ. Milton Keynes, United Kingdom)
Auld, R. (Cardiff Univ. United Kingdom)
Baes, M. (Gent Univ. Gent, Belgium)
Baldry, I. K. (John Moores Univ. United Kingdom)
Bamford, S. (Nottingham Univ. United Kingdom)
Blain, A. (California Inst. of Tech. Pasadena, CA, United States)
Bock, J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bonfield, D. (Hertfordshire Univ. United Kingdom)
Burgarella, D. (Centre National de la Recherche Scientifique Marseilles, France)
Buttiglione, S. (Osservatorio Astronomico Padova, Italy)
Cameron, E. (Eidgenoessische Technische Hochschule Zurich, Switzerland)
Cava, A. (Instituto de Astrofisica de Canarias Tenerife, Spain)
Clements, D. (Imperial Chemical Industries Ltd. London, United Kingdom)
Croom, S. (Sydney Univ. Australia)
Dariush, A. (Cardiff Univ. United Kingdom)
deZotti, G. (Osservatorio Astronomico Padova, Italy)
Driver, S. (Saint Andrew's Univ. United Kingdom)
Dunlop, J. (Edinburgh Univ. United Kingdom)
Dunne, L. (Nottingham Univ. United Kingdom)
Dye, S. (Cardiff Univ. United Kingdom)
Date Acquired
August 24, 2013
Publication Date
March 30, 2010
Subject Category
Distribution Limits