H-ATLAS J115521.0-021329 , the SIMBAD biblio

2018MNRAS.473.1751B - Mon. Not. R. Astron. Soc., 473, 1751-1773 (2018)

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

BAKX T.J.L.C., EALES S.A., NEGRELLO M., SMITH M.W.L., VALIANTE E., HOLLAND W.S., BAES M., BOURNE N., CLEMENTS D.L., DANNERBAUER H., DE ZOTTI G., DUNNE L., DYE S., FURLANETTO C., IVISON R.J., MADDOX S., MARCHETTI L., MICHALOWSKI M.J., OMONT A., OTEO I., WARDLOW J.L., VAN DER WERF P. and YANG C.

Abstract (from CDS):

We present the Herschel Bright Sources (HerBS) sample, a sample of bright, high-redshift Herschel sources detected in the 616.4 deg2 Herschel Astrophysical Terahertz Large Area Survey. The HerBS sample contains 209 galaxies, selected with a 500 µm 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 Common-User Bolometer Array 2 (SCUBA-2) observations at 850 µm of 189 galaxies of the HerBS sample, 152 of these sources were detected. We fit a spectral template to the Herschel-Spectral and Photometric Imaging Receiver (SPIRE) and 850 µm 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 β 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 µm 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.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gravitational lensing: strong - galaxies: high-redshift - submillimetre: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/473/1751): tablea1.dat tablea2.dat>

Nomenclature: Table A1: HerBS NNN N=209.

Errata: erratum vol. 494, p. 10 (2020)

Simbad objects: 228

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2023.02.04-03:04:06

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