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The impact of expanding HII regions on filament G37. Curved magnetic field and multiple direction material flows

文献类型：期刊论文

作者Zhao, Mengke1,4,5,6; Tang, Xindi1,2,3,6; Qiu, Keping4,5; He, Yuxin1,2,3,6; Li, Dalei1,2,3,6
刊名ASTRONOMY & ASTROPHYSICS
出版日期2025-04-25
卷号696页码:A178
关键词stars: formation ISM: clouds evolution HII regions ISM: magnetic fields
ISSN号0004-6361
DOI10.1051/0004-6361/202450965
产权排序2
英文摘要Filament G37 exhibits a distinctive "caterpillar" shape, characterized by two semicircular structures within its 40 pc-long body, and provides an ideal target to investigate the formation and evolution of filaments. By analyzing multiple observational data, such as the CO spectral line, the H alpha radio recombination line, and the multiwavelength continuum, we find that the expanding H II regions that surround filament G37 exert pressure on the structure of the filament body, which kinetic process present as the gas flows in multiple directions along the skeleton of the filament body. The curved magnetic field structure of filament G37 derived by employing the velocity gradient technique with CO is found to be parallel to the filament body and support the pressure from expanded H II regions. The multidirectional flows in filament G37 could cause the accumulation and subsequent collapse of gas, which would result in the formation of massive clumps. The curved structure and star formation observed in filament G37 are likely to be a result of the filament body being squeezed by the expanding H II region. This physical process occurs over a timescale of approximately 5 Myr. Filament G37 provides a potential candidate for end-dominated collapse.
WOS关键词JCMT BISTRO SURVEY ; GALACTIC PLANE ; GRAVITATIONAL COLLAPSE ; VELOCITY-GRADIENTS ; MOLECULAR CLOUDS ; CORE FORMATION ; ORION ; COHERENT ; DENSITY ; PC
资助项目National Key R&D Program of China[2023YFA1608002] ; National Key R&D Program of China[2023YFA1608204] ; National Key R&D Program of China[2022YFA1603100] ; Chinese Academy of Sciences (CAS) alight of West Chinaa Program[xbzg-zdsys-202212] ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region[2022TSYCLJ0005] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022D01E06] ; Xinjiang Key Laboratory of Radio Astrophysics[2023D04033] ; National Natural Science Foundation of China[12173075] ; National Natural Science Foundation of China[12425304] ; National Natural Science Foundation of China[U1731237] ; Youth Innovation Promotion Association CAS
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001476794000021
出版者EDP SCIENCES S A
资助机构National Key R&D Program of China ; Chinese Academy of Sciences (CAS) alight of West Chinaa Program ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Xinjiang Key Laboratory of Radio Astrophysics ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
源URL[http://ir.xao.ac.cn/handle/45760611-7/7727]  
专题恒星形成与演化研究团组
通讯作者Zhao, Mengke; Tang, Xindi
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
3.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
4.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China
5.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Mengke,Tang, Xindi,Qiu, Keping,et al. The impact of expanding HII regions on filament G37. Curved magnetic field and multiple direction material flows[J]. ASTRONOMY & ASTROPHYSICS,2025,696:A178.
APA Zhao, Mengke,Tang, Xindi,Qiu, Keping,He, Yuxin,&Li, Dalei.(2025).The impact of expanding HII regions on filament G37. Curved magnetic field and multiple direction material flows.ASTRONOMY & ASTROPHYSICS,696,A178.
MLA Zhao, Mengke,et al."The impact of expanding HII regions on filament G37. Curved magnetic field and multiple direction material flows".ASTRONOMY & ASTROPHYSICS 696(2025):A178.

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来源：新疆天文台

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