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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 - IV. Radio-mm-FIR photometric redshifts
Monthly Notices of the Royal Astronomical Society, Volume 379, No. 4, Year 2007
Notification
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Description
We present the redshift distribution of the Submillimetre Common-User Bolometer Array (SCUBA) Half Degree Survey (SHADES) galaxy population based on the rest-frame radio-mm-far-infrared (FIR) colours of 120 robustly detected 850 μm sources in the Lockman Hole East (LH) and Subaru XMM-Newton Deep Field (SXDF). The redshift distribution derived from the full spectral energy distribution (SED) information is shown to be narrower than that determined from the radio-sub-mm spectral index, as more photometric bands contribute to a higher redshift accuracy. The redshift distribution of sources derived from at least two photometric bands peaks at z ≈ 2.4 and has a near-Gaussian distribution, with 50 per cent (interquartile range) of sources at z = 1.8-3.1. We find a statistically significant difference between the measured redshift distributions in the two fields; the SXDF peaking at a slightly lower redshift (median z ≈ 2.2) than the LH (median z ≈ 2.7), which we attribute to the noise properties of the radio observations. We demonstrate, however, that there could also be field-to-field variations that are consistent with the measured differences in the redshift distributions and, hence, that the incomplete area observed by SHADES with SCUBA, despite being the largest sub-mm survey to date, may still be too small to fully characterize the bright sub-mm galaxy population. Finally, we present a brief comparison with the predicted, or assumed, redshift distributions of sub-mm galaxy formation and evolution models, and we derive the contribution of these SHADES sources and the general sub-mm galaxy population to the star formation rate density at different epochs. © 2007 RAS.
Authors & Co-Authors
Aretxaga, Itziar
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Hughes, David Handel
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Coppin, Kristen E.K.
United Kingdom, Durham
Durham University
Canada, Vancouver
The University of British Columbia
Mortier, Angela M.J.
United Kingdom, Edinburgh
The University of Edinburgh
United Kingdom, Canterbury
University of Kent
Wagg, Jeff
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
United States, Socorro
National Radio Astronomy Observatory Socorro
James S. Dunlop, James S.
United Kingdom, Edinburgh
The University of Edinburgh
Chapin, Edward L.
Canada, Vancouver
The University of British Columbia
Eales, Stephen A.
United Kingdom, Cardiff
Cardiff University
Gaztañaga, E.
Mexico, Puebla
Instituto Nacional de Astrofisica Optica y Electronica
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Halpern, Mark
Canada, Vancouver
The University of British Columbia
Ivison, Robert J.
United Kingdom, Edinburgh
Uk Astronomy Technology Centre
van Kampen, Eelco V.
Austria, Innsbruck
Universität Innsbruck
Scott, Douglas J.
Canada, Vancouver
The University of British Columbia
Serjeant, Stephen B.G.
United Kingdom, Milton Keynes
The Open University
Smail, Ian R.
United Kingdom, Durham
Durham University
Benson, Andrew J.
United States, Pasadena
California Institute of Technology
Chapman, Scott C.
United States, Pasadena
California Institute of Technology
Clements, David L.
United Kingdom, London
Imperial College London
Dunne, Loretta
United Kingdom, Nottingham
University of Nottingham
Dye, S.
United Kingdom, Cardiff
Cardiff University
Farrah, Duncan G.
United States, Ithaca
Cornell University
Jarvis, Matthew J.
United Kingdom, Hatfield
University of Hertfordshire
United Kingdom, Oxford
Denys Wilkinson Building
Robert Mann, Robert G.
United Kingdom, Edinburgh
The University of Edinburgh
Pope, Alexandra
Canada, Vancouver
The University of British Columbia
Rawlings, Steve G.
United Kingdom, Oxford
Denys Wilkinson Building
Seigar, Marc S.
United States, Irvine
University of California, Irvine
Silva, Laura
Italy, Trieste
Osservatorio Astronomico Di Trieste
Simpson, Chris J.S.M.
United Kingdom, Liverpool
Liverpool John Moores University
Vaccari, Mattia
United Kingdom, London
Imperial College London
Italy, Padua
Università Degli Studi Di Padova
Statistics
Citations: 92
Authors: 29
Affiliations: 21
Identifiers
Doi:
10.1111/j.1365-2966.2007.12036.x
ISSN:
00358711
Study Design
Cross Sectional Study
Study Approach
Quantitative