An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Survey Description and First Results | |
Chen, Chian-Chou9; Liao, Cheng-Lin9,10; Smail, Ian11; Swinbank, A. M.11; Ao, Y.8; Bunker, A. J.7; Chapman, S. C.15,16,17; Hatsukade, B.12; Ivison, R. J.13; Lee, Minju M.1,2,14 | |
刊名 | ASTROPHYSICAL JOURNAL |
2022-04-01 | |
卷号 | 929期号:2 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac61df |
产权排序 | 第17完成单位 |
文献子类 | Article |
英文摘要 | We introduce an ALMA band 3 spectroscopic survey targeting the brightest submillimeter galaxies (SMGs) in the COSMOS field. Here we present the first results based on the 18 primary SMGs that have 870 mu m flux densities of S-870 =12.4-19.3 mJy and are drawn from a parent sample of 260 ALMA-detected SMGs from the AS2COSMOS survey. We detect emission lines in 17 and determine their redshifts to be in the range of z = 2-5 with a median of 3.3 +/- 0.3. We confirm that SMGs with brighter S(870 )are located at higher redshifts. The data additionally cover five fainter companion SMGs, and we obtain line detection in one. Together with previous studies, our results indicate that for SMGs that satisfy our selection, their brightest companion SMGs are physically associated with their corresponding primary SMGs >= 40% of the time, suggesting that mergers play a role in the triggering of star formation. By modeling the foreground gravitational fields, <10% of the primary SMGs can be strongly lensed with a magnification mu > 2. We determine that about 90% of the primary SMGs have lines that are better described by double Gaussian profiles, and the median separation of the two Gaussian peaks is 430 +/- 40 km s(-1). This allows estimates of an average baryon mass, which, together with the line dispersion measurements, puts our primary SMGs on the similar mass-sigma correlation found on local early-type galaxies. Finally, the number density of our z > 4 primary SMGs is found to be 11 x 10(-6 )cMpc(-3), suggesting that they can be the progenitors of z similar to 3-4 massive quiescent galaxies. |
学科主题 | 天文学 ; 星系与宇宙学 ; 星系天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan[MOST 109-2112-M-001-016-MY3] ; STFCUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC)[ST/T000244/1] ; JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI)[20H01953] ; European Research Council (ERC) under the European UnionEuropean Research Council (ERC)[789056] ; Danish National Research FoundationDanmarks Grundforskningsfond[140] ; ALMA[2019.1.01600] |
WOS关键词 | COSMOLOGY LEGACY SURVEY ; STAR-FORMING GALAXIES ; GRAVITATIONALLY LENSED GALAXIES ; PHOTOMETRIC REDSHIFT SURVEY ; DEGREE EXTRAGALACTIC SURVEY ; MOLECULAR GAS PROPERTIES ; NUMBER COUNTS ; DARK-MATTER ; PHYSICAL-PROPERTIES ; STELLAR MASSES |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000787025200001 |
资助机构 | Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan[MOST 109-2112-M-001-016-MY3] ; STFCUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC)[ST/T000244/1] ; JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI)[20H01953] ; European Research Council (ERC) under the European UnionEuropean Research Council (ERC)[789056] ; Danish National Research FoundationDanmarks Grundforskningsfond[140] ; ALMA[2019.1.01600] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25079] |
专题 | 星系类星体研究组 |
通讯作者 | Chen, Chian-Chou |
作者单位 | 1.DTU-Space, Technical University of Denmark, Elektrovej 327, DK-2800 Kgs. Lyngby, Denmark; 2.Max-Planck-Institut für Extraterrestrische Physik (MPE), Giessenbachstr. 1, D-85748 Garching, Germany; 3.School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK; 4.Institute for Cosmic Ray Research, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan; 5.Institute of Astronomy, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan; 6.Yunnan Observatories, Chinese Academy of Sciences, Guandu District, Kunming 650011, People's Republic of China 7.Department of Physics, University of Oxford, Keble Road, Oxford OX13RH, UK; 8.Purple Mountain Observatory and Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing, People's Republic of China; 9.Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan; ccchen@asiaa.sinica.edu.tw; 10.Graduate Institute of Astrophysics, National Taiwan University, Taipei 10617, Taiwan; |
推荐引用方式 GB/T 7714 | Chen, Chian-Chou,Liao, Cheng-Lin,Smail, Ian,et al. An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Survey Description and First Results[J]. ASTROPHYSICAL JOURNAL,2022,929(2). |
APA | Chen, Chian-Chou.,Liao, Cheng-Lin.,Smail, Ian.,Swinbank, A. M..,Ao, Y..,...&Zhao YH.(2022).An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Survey Description and First Results.ASTROPHYSICAL JOURNAL,929(2). |
MLA | Chen, Chian-Chou,et al."An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS Field (AS2COSPEC): Survey Description and First Results".ASTROPHYSICAL JOURNAL 929.2(2022). |
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