The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees

doi:10.3847/1538-4357/ab23ff

	The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees
	Simpson, J. M.1; Smail, Ian 2; Swinbank, A. M.2; Chapman, S. C.3; Chen, Chian-Chou 4; Geach, J. E.6; Matsuda, Y.7,8; Wang, R.9; Wang, Wei-Hao 1; Yang, Y.10
刊名	ASTROPHYSICAL JOURNAL
	2019-07-20
卷号	880 期号:1 页码:21
关键词	galaxies: high-redshift galaxies: starburst
ISSN号	0004-637X
DOI	10.3847/1538-4357/ab23ff
通讯作者	Simpson, J. M.(jsimpson@asiaa.sinica.edu.tw)
英文摘要	We present sensitive 850 mu m imaging of the Cosmological Evolution Survey (COSMOS) field using 640 hr of new and archival observations taken with SCUBA-2 at the East Asian Observatory's James Clerk Maxwell Telescope. The SCUBA-2 COSMOS survey (S2COSMOS) achieves a median noise level of sigma(850 mu m) = 1.2 mJy beam(-1 )over an area of 1.6 sq. degree (MAIN; Hubble Space Telescope/Advanced Camera for Surveys footprint), and sigma(850 mu m) = 1.7 mJy beam(-1) over an additional 1 sq. degree of supplementary (SUPP) coverage. We present a catalog of 1020 and 127 sources detected at a significance level of >4 sigma and >4.3 sigma in the MAIN and SUPP regions, respectively, corresponding to a uniform 2% false-detection rate. We construct the single-dish S-850 mu m number counts at S-850 > 2 mJy and show that these S2COSMOS counts are in agreement with previous single-dish surveys, demonstrating that degree-scale fields are sufficient to overcome the effects of cosmic variance in the S-850 = 2-10 mJy population. To investigate the properties of the galaxies identified by S2COSMOS sources we measure the surface density of near-infrared-selected galaxies around their positions and identify an average excess of 2.0 +/- 0.2 galaxies within a 13 '' radius (similar to 100 kpc at z similar to 2). The bulk of these galaxies represent near-infrared-selected submillimeter galaxies and/or spatially correlated sources and lie at a median photometric redshift of z = 2.0 +/- 0.1. Finally, we perform a stacking analysis at submillimeter and far-infrared wavelengths of stellarmass-selected galaxies (M-* = 10(10)-10(12) M-circle dot) from z = 0-4, obtaining high-significance detections at 850 mu m in all subsets (signal-to-noise ratio, S/N = 4-30), and investigate the relation between far-infrared luminosity, stellar mass, and the peak wavelength of the dust spectral energy distribution. The publication of this survey adds a new deep, uniform submillimeter layer to the wavelength coverage of this well-studied COSMOS field.
WOS关键词	LEGACY SURVEY ; DEEP-FIELD ; STAR-FORMATION ; MU-M ; LUMINOSITY FUNCTION ; GALAXY FORMATION ; SOURCE COUNTS ; ALMA SURVEY ; EXTRAGALACTIC SURVEY ; INFRARED GALAXIES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000476896700008
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/27057]
专题	中国科学院紫金山天文台
通讯作者	Simpson, J. M.
作者单位	1.Acad Sinica, Inst Astron & Astrophys, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan 2.Univ Durham, Ctr Extragalact Astron, South Rd, Durham DH1 3LE, England 3.Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada 4.European Southern Observ, Karl Schwarzschild Str 2, Garching, Germany 5.Univ Edinburgh, Royal Observ, Inst Astron, Blackford HIll, Edinburgh EH9 3HJ, Midlothian, Scotland 6.Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England 7.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 8.Grad Univ Adv Studies SOKENDAI, Mitaka, Tokyo 1818588, Japan 9.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 10.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
推荐引用方式 GB/T 7714	Simpson, J. M.,Smail, Ian,Swinbank, A. M.,et al. The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees[J]. ASTROPHYSICAL JOURNAL,2019,880(1):21.
APA	Simpson, J. M..,Smail, Ian.,Swinbank, A. M..,Chapman, S. C..,Chen, Chian-Chou.,...&Wardlow, J. L..(2019).The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees.ASTROPHYSICAL JOURNAL,880(1),21.
MLA	Simpson, J. M.,et al."The East Asian Observatory SCUBA-2 Survey of the COSMOS Field: Unveiling 1147 Bright Sub-millimeter Sources across 2.6 Square Degrees".ASTROPHYSICAL JOURNAL 880.1(2019):21.