Triggered and dispersed under feedback of super HII region W4
文献类型：期刊论文
| 作者 | Shen, Hailiang1,7; Esimbek, Jarken1,4,6,7 ; Henkel, Christian5,7; Li, Dalei1,4,6,7; Zhou, Jianjun1,4,6,7; He, Yuxin1,4,6,7; Tang, Xindi1,4,6,7; Wu, Gang1,4,5,6,7; Komesh, Toktarkhan2,3; Tursun, Kadirya4,6,7
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2025-01 |
| 卷号 | 693页码:A21 |
| 关键词 | methods: observational ISM: clouds HII regions ISM: kinematics and dynamics ISM: structure |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202450914 |
| 产权排序 | 1 |
| 英文摘要 | The W3/4 Giant Molecular Cloud (GMC) was an ideal target to study the impact of HII regions onto the surrounding molecular gas and star formation. We utilized PMO CO (1-0) data from the Milky Way Imaging Scroll Painting (MWISP) survey to analyze the cloud structure and the feedback effect from the W4 HII region. Our observations showed that cold gas, traced by CO, mainly resided in the W3 GMC, with (CO)-O-18 concentrated in dense regions, while gas around W4 was dispersed. The (CO)-C-13 position-position-velocity (PPV) distributions revealed a "C" shaped structure in the W3 cloud with more redshifted gas at higher galactic longitudes. A high density layer (HDL) region on the eastern side of the W3 region exhibited a flattened structure facing W4. Subdividing the area into 16 subregions, we found that regions 6-9 on the HDL layer exhibited the strongest radiation, while clouds at the W4 bubble boundary not facing W3 exhibited weak signals, possibly due to star formation triggering and subsequent molecular gas dispersal by the HII region. Analysis along four paths from the W4 HII region to the far side showed a consistent trend of sharply increasing intensity followed by a slow decrease, indicating the gas was effectively eroded and heated by the photon dominated region (PDR) near the boundary of the HII region. Clump identification based on (CO)-C-13 emission revealed 288 structures categorized as "bubble," "HDL," and "quiescent" clumps. Analysis of mass-radius and Virial-mass relationships showed a potential for high-mass star formation in 29.5% (85/288) of the clumps, with 39.2% (113/288) being gravitationally bound. HDL clumps exhibited distinct L/M and velocity dispersion, suggesting an earlier evolutionary stage and gravitational instability compared to quiescent and bubble clumps. Clump parameter differences provided evidence for triggered and dispersed effects of the W4 HII region on the HDL and bubble regions, respectively. |
| WOS关键词 | H-II REGIONS ; GIANT MOLECULAR CLOUD ; CO OUTFLOW CANDIDATES ; PERSEUS SPIRAL ARM ; STAR-FORMATION ; GALACTIC CHIMNEY ; MASSIVE STARS ; INTERSTELLAR-MEDIUM ; MILKY-WAY ; DYNAMICAL EVOLUTION |
| 资助项目 | the National Key R\&D Program of China[2023YFA1608000] ; National Key R&D Program of China[2022E01050] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[12173075] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[12373029] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[12103082] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[12403033] ; National Natural Science Foundation of China (NSFC)[2022TSYCLJ0005] ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Xinjiang Uygur Autonomous Region[2022D01E06] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[xbzg-zdsys-202212] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2020-XBQNXZ-017] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2021-XBQNXZ-028] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022D04033] ; Xinjiang Key Laboratory of Radio Astrophysics[2023VMA0031] ; Xinjiang Key Laboratory of Radio Astrophysics[2025PVA0048] ; Youth Innovation Promotion Association CAS - Chinese Academy of Sciences President's International Fellowship initiative[AP13067768] ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan[QYZDJ-SSW-SLH047] ; CAS Key Research Program of Frontier Sciences |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001382923000014 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | the National Key R\&D Program of China ; National Key R&D Program of China ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Xinjiang Uygur Autonomous Region ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program ; Xinjiang Key Laboratory of Radio Astrophysics ; Youth Innovation Promotion Association CAS - Chinese Academy of Sciences President's International Fellowship initiative ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan ; CAS Key Research Program of Frontier Sciences |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7343]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Shen, Hailiang; Esimbek, Jarken; Henkel, Christian |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 2.Nazarbayev Univ, Energet Cosmos Lab, Astana 010000, Kazakhstan 3.Al Farabi Kazakh Natl Univ, Inst Expt & Theoret Phys, Alma Ata 050040, Kazakhstan 4.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 5.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 6.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Shen, Hailiang,Esimbek, Jarken,Henkel, Christian,et al. Triggered and dispersed under feedback of super H |
| APA |
Shen, Hailiang.,Esimbek, Jarken.,Henkel, Christian.,Li, Dalei.,Zhou, Jianjun.,...&Berdikhan, Dilda.(2025).Triggered and dispersed under feedback of super H |
| MLA |
Shen, Hailiang,et al."Triggered and dispersed under feedback of super H |
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来源：新疆天文台
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