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The SCUBA 8-mJy survey - II. Multiwavelength analysis of bright submillimetre sources

Fox, M. J.; Efstathiou, A.; Rowan-Robinson, M.; Dunlop, J.; Scott, S.; Serjeant, S.; Mann, R. G.; Oliver, S.; Ivison, R. J.; Blain, A.; Almaini, O.; Hughes, D.; Willott, C. J.; Longair, C. J.; Lawrence, A. and Peacock, J. A. (2002). The SCUBA 8-mJy survey - II. Multiwavelength analysis of bright submillimetre sources. Monthly Notices of the Royal Astronomical Society, 331(4) pp. 839–852.

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We present the results of a multiwavelength study of the 19 most significant submillimetre (submm) sources detected in the SCUBA 8-mJy survey. As described in Scott et al. , this survey covers ~=260arcmin2 using the submillimetre camera SCUBA, to a limiting source detection limit S 850mum ~=8mJy. One advantage of this relatively bright flux-density limit is that accurate astrometric positions are potentially achievable for every source using existing radio and/or millimetre-wave interferometers. However, an associated advantage is that spectral energy distribution (SED) based redshift constraints should be more powerful than in fainter submm surveys. Here we therefore exploit the parallel SCUBA 450-mum data, in combination with existing radio and Infrared Space Observatory (ISO ) data at longer and shorter wavelengths to set constraints on the redshift of each source. We also analyse new and existing optical and near-infrared imaging of our SCUBA survey fields to select potential identifications consistent with these constraints. Our derived SED-based redshift constraints, and the lack of statistically significant associations with even moderately bright galaxies allow us to conclude that all 19 sources lie at z >1, and at least half of them apparently lie at z >2.

Item Type: Journal Item
ISSN: 1365-2966
Extra Information: Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract.
Keywords: distances; redshifts; galaxies; evolution; starburst; cosmology; observations
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 5802
Depositing User: Users 13 not found.
Date Deposited: 06 Nov 2006
Last Modified: 02 May 2018 12:40
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