The Herschel Bright Sources (HerBS): sample definition and SCUBA-2 observations
文献类型：期刊论文
| 作者 | Bakx, Tom 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. |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018 |
| 卷号 | 473期号:2页码:1751-1773 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000423731200026 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/17986]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：紫金山天文台
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