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The Herschel Bright Sources (HerBS) : sample definition and SCUBA-2 observations

Tom JLC Bakx, SA Eales, M Negrello, MWL Smith, E Valiante, WS Holland, Maarten Baes UGent, N Bourne, DL Clements, H Dannerbauer, et al. (2018) MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 473(2). p.1751-1773
abstract
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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
gravitational lensing: strong, galaxies: high-redshift, submillimetre: galaxies, DEEP FIELD-SOUTH, SUBMILLIMETER GALAXY POPULATION, STAR-FORMATION, BOLOMETER CAMERA, LENSED GALAXIES, REDSHIFT SURVEY, ALMA SURVEY, ATLAS, COUNTS, DUST
journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Mon. Not. Roy. Astron. Soc.
volume
473
issue
2
pages
1751 - 1773
Web of Science type
Article
Web of Science id
000423731200026
ISSN
0035-8711
1365-2966
DOI
10.1093/mnras/stx2267
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8538515
handle
http://hdl.handle.net/1854/LU-8538515
date created
2017-11-22 11:44:51
date last changed
2018-05-08 11:27:08
@article{8538515,
  abstract     = {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.},
  author       = {Bakx, Tom JLC and Eales, SA and Negrello, M and Smith, MWL and Valiante, E and Holland, WS and Baes, Maarten and Bourne, N and Clements, DL and Dannerbauer, H and De Zotti, G and Dunne, L and Dye, S and Furlanetto, C and Ivison, RJ and Maddox, S and Marchetti, L and Micha\unmatched{0142}owski, MJ and Omont, A and Oteo, I and Wardlow, JL and van der Werf, P and Yang, C},
  issn         = {0035-8711},
  journal      = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
  keyword      = {gravitational lensing: strong,galaxies: high-redshift,submillimetre: galaxies,DEEP FIELD-SOUTH,SUBMILLIMETER GALAXY POPULATION,STAR-FORMATION,BOLOMETER CAMERA,LENSED GALAXIES,REDSHIFT SURVEY,ALMA SURVEY,ATLAS,COUNTS,DUST},
  language     = {eng},
  number       = {2},
  pages        = {1751--1773},
  title        = {The Herschel Bright Sources (HerBS) : sample definition and SCUBA-2 observations},
  url          = {http://dx.doi.org/10.1093/mnras/stx2267},
  volume       = {473},
  year         = {2018},
}

Chicago
Bakx, Tom JLC, SA Eales, M Negrello, MWL Smith, E Valiante, WS Holland, Maarten Baes, et al. 2018. “The Herschel Bright Sources (HerBS) : Sample Definition and SCUBA-2 Observations.” Monthly Notices of the Royal Astronomical Society 473 (2): 1751–1773.
APA
Bakx, T. J., Eales, S., Negrello, M., Smith, M., Valiante, E., Holland, W., Baes, M., et al. (2018). The Herschel Bright Sources (HerBS) : sample definition and SCUBA-2 observations. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 473(2), 1751–1773.
Vancouver
1.
Bakx TJ, Eales S, Negrello M, Smith M, Valiante E, Holland W, et al. The Herschel Bright Sources (HerBS) : sample definition and SCUBA-2 observations. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2018;473(2):1751–73.
MLA
Bakx, Tom JLC, SA Eales, M Negrello, 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. Print.