| DOI | Resolve DOI: https://doi.org/10.1093/mnras/stt1577 |
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| Author | Search for: Roseboom, I.G.; Search for: Dunlop, J.S.; Search for: Cirasuolo, M.; Search for: Geach, J.E.; Search for: Smail, I.; Search for: Halpern, M.; Search for: Van der Werf, P.; Search for: Almaini, O.; Search for: Arumugam, V.; Search for: Asboth, V.; Search for: Auld, R.; Search for: Blain, A.; Search for: Bremer, M.N.; Search for: Bock, J.; Search for: Bowler, R.A.A.; Search for: Buitrago, F.; Search for: Chapin, E.; Search for: Chapman, S.; Search for: Chrysostomou, A.; Search for: Clarke, C.; Search for: Conley, A.; Search for: Coppin, K.E.K.; Search for: Danielson, A.L.R.; Search for: Farrah, D.; Search for: Glenn, J.; Search for: Hatziminaoglou, E.; Search for: Ibar, E.; Search for: Ivison, R.J.; Search for: Jenness, T.; Search for: van Kampen, E.; Search for: Karim, A.; Search for: Mackenzie, T.; Search for: Marsden, G.; Search for: Meijerink, R.; Search for: Michałowski, M.J.; Search for: Oliver, S.J.; Search for: Page, M.J.; Search for: Pearson, E.; Search for: Scott, D.; Search for: Simpson, J.M.; Search for: Smith, D.J.B.; Search for: Spaans, M.; Search for: Swinbank, A.M.; Search for: Symeonidis, M.; Search for: Targett, T.; Search for: Valiante, E.; Search for: Viero, M.; Search for: Wang, L.; Search for: Willott, C.J.1; Search for: Zemcov, M. |
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| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Abstract | We investigate the multiwavelength properties of a sample of 450-μm-selected sources from the SCUBA-2 Cosmology Legacy Survey. A total of 69 sources were identified above 4σ in deep SCUBA-2 450-μm observations overlapping the UDS and COSMOS fields and covering 210 arcmin2 to a typical depth of σ450 = 1.5mJy. Reliable cross-identifications are found for 58 sources (84 per cent) in Spitzer and Hubble Space Telescope WFC3/IR data. The photometric redshift distribution (dN/dz) of 450-μm-selected sources is presented, showing a broad peak in the redshift range 1 < z < 3 and a median of z = 1.4. Combining the SCUBA-2 photometry with Herschel SPIRE data from HerMES, the submm spectral energy distribution (SED) is examined via the use of modified blackbody fits, yielding aggregate values for the IR luminosity, dust temperature and emissivity of (LIR) = 1012 ± 0.8 L, (TD) = 42 ± 11K and (βD) = 1.6 ± 0.5, respectively. The relationship between these SED parameters and the physical properties of galaxies is investigated, revealing correlations between TD and LIR and between βD and both stellar mass and effective radius. The connection between the star formation rate (SFR) and stellar mass is explored, with 24 per cent of 450-μm sources found to be 'starbursts', i.e. displaying anomalously high specific SFRs. However, both the number density and observed properties of these 'starburst' galaxies are found to be consistent with the population of normal star-forming galaxies. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. |
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| Publication date | 2013 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269737 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 974a5a2b-0549-462a-8dad-9a4fe4ca10fd |
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| Record created | 2013-12-13 |
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| Record modified | 2020-04-22 |
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