The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations
Bakx, Tom J. L. C.1; Eales, S. A.1; Negrello, M.1; Smith, M. W. L.1; Valiante, E.1; Holland, W. S.2; Baes, M.3; Bourne, N.4; Clements, D. L.5; Dannerbauer, H.6,7,8; De Zotti, G.9; Dunne, L.1; Dye, S.10; Furlanetto, C.10,11; Ivison, R. J.4,12; Maddox, S.1; Marchetti, L.13; Michalowski, M. J.4,14; Omont, A.15,16; Oteo, I.4,12; Wardlow, J. L.17; van der Werf, P.18; Yang, C.15,16,19,20,21

We present the Herschel Bright Sources (HerBS) sample, a sample of bright, high-redshift Herschel sources detected in the 616.4 deg(2) Herschel Astrophysical Terahertz Large Area Survey. The HerBS sample contains 209 galaxies, selected with a 500 mu m flux density greater than 80 mJy and an estimated redshift greater than 2. The sample consists of a combination of hyperluminous infrared galaxies and lensed ultraluminous infrared galaxies during the epoch of peak cosmic star formation. In this paper, we present Submillimetre CommonUser Bolometer Array 2 (SCUBA-2) observations at 850 mu m of 189 galaxies of the HerBS sample, 152 of these sources were detected. We fit a spectral template to the HerschelSpectral and Photometric Imaging Receiver (SPIRE) and 850 mu m SCUBA-2 flux densities of 22 sources with spectroscopically determined redshifts, using a two- component modified blackbody spectrum as a template. We find a cold- and hot- dust temperature of 21.29(-1.66)(+1.35) and 45.80(-3.48)(+2.88) K, a cold-to-hot dust mass ratio of 26.62(-6.74)(+5.61) and a beta of 1.83(-0.28)(+0.14) . The poor quality of the fit suggests that the sample of galaxies is too diverse to be explained by our simple model. Comparison of our sample to a galaxy evolution model indicates that the fraction of lenses are high. Out of the 152 SCUBA-2 detected galaxies, the model predicts 128.4 +/- 2.1 of those galaxies to be lensed (84.5 per cent). The SPIRE 500 mu m flux suggests that out of all 209 HerBS sources, we expect 158.1 +/- 1.7 lensed sources, giving a total lensing fraction of 76 per cent.

Keywordgravitational lensing: strong galaxies: high-redshift submillimetre: galaxies
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000423731200026
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorBakx, Tom J. L. C.
Affiliation1.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales
2.Royal Observ, UK Astron Technol Ctr, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
3.Univ Ghent, Sterrenkundig Observ, Krijgslaan 281 S9, B-9000 Ghent, Belgium
4.Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland
5.Imperial Coll, Blackett Lab, Astrophys Grp, Prince Consort Rd, London SW7 2AZ, England
6.Univ Wien, Inst Astrophys, Turkenschanzstr 17, A-1180 Vienna, Austria
7.IAC, E-38205 Tenerife, Spain
8.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain
9.INAF, Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
10.Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England
11.Minist Educ Brazil, CAPES Fdn, BR-70040020 Brasilia, DF, Brazil
12.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
13.Open Univ, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks, England
14.Adam Mickiewicz Univ, Astron Observ Inst, Fac Phys, Ul Sloneczna 36, PL-60286 Poznan, Poland
15.UPMC Univ Paris 06, UMR7095, Inst Astrophys Paris, F-75014 Paris, France
16.CNRS, UMR7095, Inst Astrophys Paris, F-75014 Paris, France
17.Univ Durham, Dept Phys, Ctr Extragalact Astron, South Rd, Durham DH1 3HP, England
18.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands
19.Chinese Acad Sci, Purple Mt Observ, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
20.Univ Paris Saclay, CNRS, Inst Astrophys Spatiale, Paris Saclay Bat 121, F-91405 Orsay, France
21.Chinese Acad Sci, Grad Univ, 19A Yuquan Rd, Beijing 10049, Peoples R China
Recommended Citation
GB/T 7714
Bakx, Tom J. L. C.,Eales, S. A.,Negrello, M.,et al. The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,473(2):1751-1773.
APA Bakx, Tom J. L. C..,Eales, S. A..,Negrello, M..,Smith, M. W. L..,Valiante, E..,...&Yang, C..(2018).The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,473(2),1751-1773.
MLA Bakx, Tom J. L. C.,et al."The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 473.2(2018):1751-1773.
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