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ALMA Imaging of the CO (7–6) Line Emission in the Submillimeter Galaxy LESS 073 at z?=?4.755**The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Zhao (赵应和),Yinghe1,2,3; Lu,Nanyao4,5; Díaz-Santos,Tanio6,8; Gao,Yu9; Xu,C. Kevin4,5; Charmandaris,Vassilis7,10; Inami,Hanae11; Rigopoulou,Dimitra12; Sanders,David B.13; Huang,Jiasheng4,5; Wang,Zhong4,5
2020-04-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume892Issue:2
AbstractAbstract In this paper we present our imaging observations on the CO?(7?6) line and its underlying continuum emission of the young submillimeter galaxy LESS?073 at redshift 4.755, using the Atacama Large Millimeter/submillimeter Array. At the achieved resolution of ~ (8 × 6 kpc2), the CO?(7?6) emission is largely unresolved (with a deconvolved size of ), and the continuum emission is totally unresolved. The CO?(7?6) line emission has an integrated flux of 0.86?±?0.08?Jy?km s?1, and a line width of 343?±?40?km s?1. The continuum emission has a flux density of 0.51?mJy. By fitting the observed far-infrared spectral energy distribution (SED) of LESS?073 with a single-temperature modified blackbody function, we obtained a dust temperature K, 60–100? μm flux density ratio , and total infrared luminosity . The SED-fit-based is consistent with those estimated from various line ratios as advocated by our earlier work, indicating that the proposed line-ratio-based method can be used to practically derive for high-z sources. The total molecular gas mass of LESS?073 is , and the inferred gas depletion time is about 43?Myr.
KeywordHigh-redshift galaxies Starburst galaxies Interstellar medium Galaxy evolution
DOI10.3847/1538-4357/ab75eb
Language英语
WOS IDIOP:0004-637X-892-2-ab75eb
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/64141
Collection中国科学院国家天文台
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; zhaoyinghe@ynao.ac.cn
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China
3.Center for Astronomical Mega-Science, CAS, 20A Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China
4.National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
5.China-Chile Joint Center for Astronomy, Chinese Academy of Sciences, Camino El Observatorio, 1515 Las Condes, Santiago, Chile
6.Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército Libertador 441, Santiago, Chile
7.Department of Physics, University of Crete, GR-71003 Heraklion, Greece
8.Chinese Academy of Sciences, South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China
9.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, People’s Republic of China
10.IAASARS, National Observatory of Athens, GR-15236, Penteli, Greece
11.Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
12.Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK
13.University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
Recommended Citation
GB/T 7714
Zhao (赵应和),Yinghe,Lu,Nanyao,Díaz-Santos,Tanio,等. ALMA Imaging of the CO (7–6) Line Emission in the Submillimeter Galaxy LESS 073 at z?=?4.755**The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.[J]. The Astrophysical Journal,2020,892(2).
APA Zhao .,Lu,Nanyao.,Díaz-Santos,Tanio.,Gao,Yu.,Xu,C. Kevin.,...&Wang,Zhong.(2020).ALMA Imaging of the CO (7–6) Line Emission in the Submillimeter Galaxy LESS 073 at z?=?4.755**The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc..The Astrophysical Journal,892(2).
MLA Zhao ,et al."ALMA Imaging of the CO (7–6) Line Emission in the Submillimeter Galaxy LESS 073 at z?=?4.755**The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.".The Astrophysical Journal 892.2(2020).
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