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Molecular Oxygen Abundance in Galactic Massive Star Formation Regions Based on SWAS Observations

文献类型：期刊论文

作者Wang, Bing-Ru5,7; Li, Di5,6,8; Goldsmith, Paul F.9; Wu, Jingwen5,7; Tsai, Chao-Wei5,10; Quan, Donghui8; Zhang, Xia11; Wang, Junzhi3; Melnick, Gary J.2; Li, Jin-Zeng5
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2024-09-01
卷号24期号:9页码:095007
关键词ISM: molecules galaxies: abundances ISM: lines and bands Galaxy: abundances
ISSN号1674-4527
DOI10.1088/1674-4527/ad5df3
产权排序7
英文摘要Molecular oxygen abundance is a key parameter in understanding the chemical network of the interstellar medium. We estimate the molecular oxygen column density and abundance for a sample of Galactic massive star formation regions based on observations from the Submillimiter Wave Astronomy Satellite (SWAS) survey. We obtained an averaged O-2 spectrum based on this sample using the (SWAS) survey data (O-2, 487.249 GHz, N = 3-1, J = 3-2). No emission or absorption feature is seen around the supposed central velocity with a total integration time of t total = 8.67 x 10(3) hr and an rms noise per channel of 1.45 mK. Assuming a kinetic temperature T kin = 30 K, we derive the 3 sigma upper limit of the O-2 column density to be 3.3 x 10(15) cm(-2), close to the lowest values reported in Galactic massive star formation regions in previous studies. The corresponding O-2 abundance upper limit is 6.7 x 10(-8), lower than all previous results based on SWAS observations and is close to the lowest reported value in massive star formation regions. On a galactic scale, our statistical results confirm a generally low O2 abundance for Galactic massive star formation regions. This abundance is also lower than results reported in extragalactic sources.
WOS关键词HERSCHEL HIFI OBSERVATIONS ; CARBON-MONOXIDE ABUNDANCE ; WAVE-ASTRONOMY-SATELLITE ; ODIN OBSERVATIONS ; THERMAL BALANCE ; UPPER LIMITS ; CLOUD CORES ; INTERSTELLAR ; O-2 ; SEARCH
资助项目National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[12041302] ; International Partnership Program of the Chinese Academy of Sciences[114A11KYSB20210010] ; National Key R&D Program of China[2023YFA1608004] ; New Cornerstone Investigator of the New Cornerstone Science Laboratory - National Aeronautics and Space Administration ; National Aeronautics and Space Administration[80NM0018D0004] ; Xinjiang Uygur Autonomous Region[1601 (SFB 1601)] ; Deutsche Forschungsgemeinschaft[500700252] ; University of Cologne
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001312305100001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Natural Science Foundation of China (NSFC) ; International Partnership Program of the Chinese Academy of Sciences ; National Key R&D Program of China ; New Cornerstone Investigator of the New Cornerstone Science Laboratory - National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; Xinjiang Uygur Autonomous Region ; Deutsche Forschungsgemeinschaft ; University of Cologne
源URL[http://ir.xao.ac.cn/handle/45760611-7/6981]  
专题天体化学研究团组
通讯作者Li, Di; Wu, Jingwen
作者单位1.Univ Manchester, Jodrell Bank Ctr Astrophys, Dept Phys & Astron, Oxford Rd, Manchester M13 9PL, England
2.Harvard & Smithsonian, Ctr Astrophys, 60 Garden St,MS 66, Cambridge, MA 02138 USA
3.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China
4.Univ Cologne, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany
5.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
6.Tsinghua Univ, Beijing 100084, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Zhejiang Lab, Res Ctr Astron Comp, Hangzhou 311100, Peoples R China
9.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
10.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Bing-Ru,Li, Di,Goldsmith, Paul F.,et al. Molecular Oxygen Abundance in Galactic Massive Star Formation Regions Based on SWAS Observations[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(9):095007.
APA Wang, Bing-Ru.,Li, Di.,Goldsmith, Paul F..,Wu, Jingwen.,Tsai, Chao-Wei.,...&Xie, Jinjin.(2024).Molecular Oxygen Abundance in Galactic Massive Star Formation Regions Based on SWAS Observations.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(9),095007.
MLA Wang, Bing-Ru,et al."Molecular Oxygen Abundance in Galactic Massive Star Formation Regions Based on SWAS Observations".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.9(2024):095007.

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