Institutional Repository of Radio Astronomy Research Laboratory
| Molecular Oxygen Abundance in Galactic Massive Star Formation Regions Based on SWAS Observations | |
Wang, Bing-Ru1,3; Li, Di1,2,4; Goldsmith, Paul F.5; Wu, Jingwen1,3; Tsai, Chao-Wei1,6; Quan, Donghui4 ; Zhang, Xia7; Wang, Junzhi8; Melnick, Gary J.9; Li, Jin-Zeng1; Fuller, Gary A.10,11; Xie, Jinjin1
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| 2024-09-01 | |
| Source Publication | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| ISSN | 1674-4527 |
| Volume | 24Issue:9Pages:095007 |
| Contribution Rank | 7 |
| Abstract | 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. |
| Keyword | ISM: molecules galaxies: abundances ISM: lines and bands Galaxy: abundances |
| DOI | 10.1088/1674-4527/ad5df3 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | HERSCHEL HIFI OBSERVATIONS ; CARBON-MONOXIDE ABUNDANCE ; WAVE-ASTRONOMY-SATELLITE ; ODIN OBSERVATIONS ; THERMAL BALANCE ; UPPER LIMITS ; CLOUD CORES ; INTERSTELLAR ; O-2 ; SEARCH |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001312305100001 |
| Publisher | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| Funding Organization | 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6982 |
| Collection | 射电天文研究室_天体化学研究团组 |
| Corresponding Author | Li, Di; Wu, Jingwen |
| Affiliation | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Tsinghua Univ, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Zhejiang Lab, Res Ctr Astron Comp, Hangzhou 311100, Peoples R China 5.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA 6.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 102206, Peoples R China 7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 8.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 9.Harvard & Smithsonian, Ctr Astrophys, 60 Garden St,MS 66, Cambridge, MA 02138 USA 10.Univ Manchester, Jodrell Bank Ctr Astrophys, Dept Phys & Astron, Oxford Rd, Manchester M13 9PL, England 11.Univ Cologne, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany |
| Recommended Citation 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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| Wang-2024-Molecular （406KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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