中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). II. Structural Properties and Near-infrared Morphologies of Faint Submillimeter Galaxies

文献类型:期刊论文

作者Chang, Yu-Yen1; Ferraro, Nicholas1,2; Wang, Wei-Hao1; Lim, Chen-Fatt1,3; Toba, Yoshiki1,4; An, Fangxia5,6,7; Chen, Chian-Chou8; Smail, Ian5; Shim, Hyunjin9; Ao, Yiping6,10
刊名ASTROPHYSICAL JOURNAL
出版日期2018-10-01
卷号865期号:2页码:16
ISSN号0004-637X
关键词galaxies: evolution galaxies: high-redshift galaxies: star formation galaxies: structure submillimeter: galaxies
DOI10.3847/1538-4357/aadd18
英文摘要

We present structural parameters and morphological properties of faint 450 mu m selected submillimeter galaxies (SMGs) from the JCMT Large Program, STUDIES, in the COSMOS-CANDELS region. Their properties are compared to an 850 mu m selected and a matched star-forming samples. We investigate stellar structures of 169 faint 450 mu m sources (S-450 = 2.8-29.6 mJy; S/N > 4) at z < 3 using HST near-infrared observations. Based on our spectral energy distribution fitting, half of such faint SMGs (L-IR = 10(11.65 +/- 0.98) L-circle dot) lie above the star formation rate (SFR)/stellar mass plane. The size-mass relation shows that these SMGs are generally similar to less-luminous star-forming galaxies selected by NUV - r versus r - J colors. Because of the intrinsic luminosity of the sample, their rest-frame optical emission is less extended than the 850 mu m sources (S-850 > 2 mJy) and more extended than the star-forming galaxies in the same redshift range. For the stellar mass and SFR-matched sample at z similar or equal to 1 and z similar or equal to 2, the size differences are marginal between faint SMGs and the matched galaxies. Moreover, faint SMGs have similar Sersic indices and projected axis ratios as star-forming galaxies with the same stellar mass and SFR. Both SMGs and the matched galaxies show high fractions (similar to 70%) of disturbed features at z similar or equal to 2, and the fractions depend on the SFRs. These suggest that their star formation activity is related to galaxy merging and the stellar structures of SMGs are similar to those of star-forming galaxies. We show that the depths of submillimeter surveys are approaching the lower luminosity end of star-forming galaxies, allowing us to detect galaxies on the main sequence.

WOS关键词STAR-FORMING GALAXIES ; COSMOLOGY LEGACY SURVEY ; HUBBLE-SPACE-TELESCOPE ; CLERK MAXWELL TELESCOPE ; HIGH-REDSHIFT ; MU-M ; MASSIVE GALAXIES ; QUIESCENT GALAXIES ; NUMBER COUNTS ; MAIN-SEQUENCE
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000445964000003
源URL[http://libir.pmo.ac.cn/handle/332002/21292]  
专题中国科学院紫金山天文台
通讯作者Chang, Yu-Yen
作者单位1.Acad Sinica, Inst Astron & Astrophys, 1 Sect 4 Roosevelt Rd,11F Astromath Bldg, Taipei 10617, Taiwan
2.Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA
3.Natl Taiwan Univ, Grad Inst Astrophys, 1 Sect 4 Roosevelt Rd, Taipei 10617, Taiwan
4.Kyoto Univ, Dept Astron, Sakyo Ku, Kitashirakawa Oiwake Cho, Kyoto 6068502, Japan
5.Univ Durham, Dept Phys, Ctr Extragalact Astron, Durham DH1 3LE, England
6.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.European Southern Observ, Karl Schwarzschild Str 2, Garching, Germany
9.Kyungpook Natl Univ, Dept Earth Sci Educ, 80 Daehak Ro, Daegu 41566, South Korea
10.NAOJ, Mitaka, Tokyo 1818588, Japan
推荐引用方式
GB/T 7714
Chang, Yu-Yen,Ferraro, Nicholas,Wang, Wei-Hao,et al. SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). II. Structural Properties and Near-infrared Morphologies of Faint Submillimeter Galaxies[J]. ASTROPHYSICAL JOURNAL,2018,865(2):16.
APA Chang, Yu-Yen.,Ferraro, Nicholas.,Wang, Wei-Hao.,Lim, Chen-Fatt.,Toba, Yoshiki.,...&Urquhart, Sheona.(2018).SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). II. Structural Properties and Near-infrared Morphologies of Faint Submillimeter Galaxies.ASTROPHYSICAL JOURNAL,865(2),16.
MLA Chang, Yu-Yen,et al."SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). II. Structural Properties and Near-infrared Morphologies of Faint Submillimeter Galaxies".ASTROPHYSICAL JOURNAL 865.2(2018):16.

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