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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The SCUBA HAlf Degree Extragalactic Survey - III. Identification of radio and mid-infrared counterparts to submillimetre galaxies
Monthly Notices of the Royal Astronomical Society, Volume 380, No. 1, Year 2007
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Description
Determining an accurate position for a submillimetre (submm) galaxy (SMG) is the crucial step that enables us to move from the basic properties of an SMG sample - source counts and 2D clustering - to an assessment of their detailed, multiwavelength properties, their contribution to the history of cosmic star formation and their links with present-day galaxy populations. In this paper, we identify robust radio and/or infrared (IR) counterparts, and hence accurate positions, for over two-thirds of the SCUBA HAlf-Degree Extragalactic Survey (SHADES) Source Catalogue, presenting optical, 24-μm and radio images of each SMG. Observed trends in identification rate have given no strong rationale for pruning the sample. Uncertainties in submm position are found to be consistent with theoretical expectations, with no evidence for significant additional sources of error. Employing the submm/radio redshift indicator, via a parametrization appropriate for radio-identified SMGs with spectroscopic redshifts, yields a median redshift of 2.8 for the radio-identified subset of SHADES, somewhat higher than the median spectroscopic redshift. We present a diagnostic colour-colour plot, exploiting Spitzer photometry, in which we identify regions commensurate with SMGs at very high redshift. Finally, we find that significantly more SMGs have multiple robust counterparts than would be expected by chance, indicative of physical associations. These multiple systems are most common amongst the brightest SMGs and are typically separated by 2-6 arcsec, at z ∼ 2, consistent with early bursts seen in merger simulations. © 2007 RAS.
Authors & Co-Authors
Ivison, Robert J.
United Kingdom, Edinburgh
Uk Astronomy Technology Centre
United Kingdom, Edinburgh
The University of Edinburgh
Greve, T. R.
United States, Pasadena
California Institute of Technology
James S. Dunlop, James S.
United Kingdom, Edinburgh
The University of Edinburgh
Peacock, John A.
United Kingdom, Edinburgh
The University of Edinburgh
Egami, Eiichi E.
United States, Tucson
The University of Arizona
Smail, Ian R.
United Kingdom, Durham
Durham University
Ibar, E.
United Kingdom, Edinburgh
The University of Edinburgh
van Kampen, Eelco V.
Austria, Innsbruck
Universität Innsbruck
Aretxaga, Itziar
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Biggs, Andrew D.
United Kingdom, Edinburgh
Uk Astronomy Technology Centre
Blain, Andrew W.
United States, Pasadena
California Institute of Technology
Chapman, Scott C.
United Kingdom, Cambridge
Institute of Astronomy
Clements, David L.
United Kingdom, London
Imperial College London
Coppin, Kristen E.K.
United Kingdom, Durham
Durham University
Canada, Vancouver
The University of British Columbia
Farrah, Duncan G.
United States, Ithaca
Cornell University
Halpern, Mark
Canada, Vancouver
The University of British Columbia
Hughes, David Handel
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Jarvis, Matthew J.
United Kingdom, Hatfield
University of Hertfordshire
Jenness, Tim
United States, Honolulu
University Hawaii Institute for Astronomy
Mortier, Angela M.J.
United Kingdom, Edinburgh
The University of Edinburgh
Oliver, Seb J.
United Kingdom, Brighton
University of Sussex
Papovich, Casey J.
United States, Tucson
The University of Arizona
Pérez-González, Pablo G.P.
Spain, Madrid
Universidad Complutense de Madrid
Pope, Alexandra
Canada, Vancouver
The University of British Columbia
Rawlings, Steve G.
United Kingdom, Oxford
Denys Wilkinson Building
Rieke, George H.
United States, Tucson
The University of Arizona
Rowan-Robinson, Michael
United Kingdom, London
Imperial College London
Scott, Douglas J.
Canada, Vancouver
The University of British Columbia
Seigar, Marc S.
United States, Irvine
University of California, Irvine
Serjeant, Stephen B.G.
United Kingdom, Milton Keynes
The Open University
Simpson, Chris J.S.M.
United Kingdom, Liverpool
Liverpool John Moores University
Stevens, Jason A.
United Kingdom, Hatfield
University of Hertfordshire
Vaccari, Mattia
United Kingdom, London
Imperial College London
Italy, Padua
Università Degli Studi Di Padova
Wagg, Jeff
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
United States, Socorro
National Radio Astronomy Observatory Socorro
Willott, Chris J.
Canada, Ottawa
University of Ottawa
Statistics
Citations: 249
Authors: 35
Affiliations: 23
Identifiers
Doi:
10.1111/j.1365-2966.2007.12044.x
ISSN:
00358711
Study Design
Cross Sectional Study
Study Approach
Quantitative