| Title | SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). IV. Spatial Clustering and Halo Masses of Submillimeter Galaxies |
| Authors | Lim, Chen-Fatt Chen, Chian-Chou Smail, Ian Wang, Wei-Hao Tee, Wei-Leong Lin, Yen-Ting Scott, Douglas Toba, Yoshiki Chang, Yu-Yen Ao, YiPing Babul, Arif Bunker, Andy Chapman, Scott C. Clements, David L. Conselice, Christopher J. Gao, Yu Greve, Thomas R. Ho, Luis C. Hong, Sungwook E. Hwang, Ho Seong Koprowski, Maciej Michalowski, Michal J. Shim, Hyunjin Shu, Xinwen Simpson, James M. |
| Affiliation | Acad Sinica, Inst Astron & Astrophys ASIAA, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan Natl Taiwan Univ, Grad Inst Astrophys, Taipei 10617, Taiwan European Southern Observ, Karl Schwarzschild Str 2, Garching, Germany Univ Durham, Ctr Extragalact Astron, Dept Phys, South Rd, Durham DH1 3LE, England Univ Arizona, Dept Phys, Tucson, AZ 85721 USA Univ British Columbia, Dept Phys & Astron, 6225 Agr Rd, Vancouver, BC V6T 1Z1, Canada Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan Ehime Univ, Res Ctr Space & Cosm Evolut, 2-5 Bunkyo Cho, Matsuyama, Ehime 7908577, Japan Chinese Acad Sci, Purple Mt Observ, Nanjing 210033, Peoples R China Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210033, Peoples R China Univ Victoria, Dept Phys & Astron, Elliott Bldg,3800 Finnerty Rd, Victoria, BC V8P 5C2, Canada Univ Oxford, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England Natl Res Council Canada, Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada Imperial Coll, Dept Phys, Blackett Lab, Prince Consort Rd, London SW7 2AZ, England Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England Cosm Dawn Ctr, Copenhagen, Denmark Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China Univ Seoul, Nat Sci Res Inst, 163 Seoulsiripdaero, Seoul 02504, South Korea Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Inst Astron, Grudziadzka 5, PL-87100 Torun, Poland Adam Mickiewicz Univ, Fac Phys, Astron Observ Inst, PL-60286 Poznan, Poland Kyungpook Natl Univ, Dept Earth Sci Educ, Deagu 41566, South Korea Anhui Normal Univ, Dept Phys, Wuhu 241000, Anhui, Peoples R China Univ Tokyo, Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Tokyo, Japan |
| Keywords | COSMOLOGY LEGACY SURVEY STAR-FORMING GALAXIES LYMAN-BREAK GALAXIES REDSHIFT SURVEY MU-M ALMA SURVEY LARGE-SCALE LUMINOSITY DEPENDENCE BOLOMETER CAMERA PASSIVE GALAXIES |
| Issue Date | Jun-2020 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | We analyze an extremely deep 450 mu m image (1 sigma = 0.56 mJy beam(-1)) of a 300 arcmin(2) area in the CANDELS/COSMOS field as part of the Sub-millimeter Common User Bolometric Array-2 Ultra Deep Imaging EAO Survey. We select a robust (signal-to-noise ratio >= 4) and flux-limited (>= 4 mJy) sample of 164 submillimeter galaxies (SMGs) at 450 mu m that have K-band counterparts in the COSMOS2015 catalog identified from radio or mid-infrared imaging. Utilizing this SMG sample and the 4705 K-band-selected non-SMGs that reside within the noise level <= 1 mJy beam(-1) region of the 450 mu m image as a training set, we develop a machine-learning classifier using K-band magnitude and color-color pairs based on the 13-band photometry available in this field. We apply the trained machine-learning classifier to the wider COSMOS field (1.6 deg(2)) using the same COSMOS2015 catalog and identify a sample of 6182 SMG candidates with similar colors. The number density, radio and/or mid-infrared detection rates, redshift and stellar-mass distributions, and the stacked 450 mu m fluxes of these SMG candidates, from the S2COSMOS observations of the wide field, agree with the measurements made in the much smaller CANDELS field, supporting the effectiveness of the classifier. Using this SMG candidate sample, we measure the two-point autocorrelation functions from z = 3 down to z = 0.5. We find that the SMG candidates reside in halos with masses of (2.0 0.5) x 10(13) h(-1) M-& x2609; across this redshift range. We do not find evidence of downsizing that has been suggested by other recent observational studies. |
| URI | http://hdl.handle.net/20.500.11897/589770 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/ab8eaf |
| Indexed | SCI(E) |
| Appears in Collections: | 科维理天文与天体物理研究所 物理学院 |
