The ALMA-ATOMS survey: Vibrationally excited HC3N lines in hot cores
文献类型：期刊论文
| 作者 | Chen, Li21; Qin, Sheng-Li21; Liu, Tie22; Goldsmith, Paul F.23; Liu, Xunchuan22; Peng, Yaping24; Tang, Xindi19,20 ; Garay, Guido17,18; Kou, Zhiping20,21,25; Tang, Mengyao2
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2025-02-11 |
| 卷号 | 694页码:A166 |
| 关键词 | stars: formation ISM: abundances HII regions ISM: molecules |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202452598 |
| 产权排序 | 5 |
| 英文摘要 | Context. Interstellar molecules are excellent tools for studying the physical and chemical environments of massive star-forming regions. In particular, the vibrationally excited HC3N (HC3N*) lines are the key tracers for probing hot cores environments. Aims. We present the Atacama Large Millimeter/submillimeter Array (ALMA) 3 mm observations of HC3N* lines in 60 hot cores and investigate how the physical conditions affect the excitation of HC3N* transitions. Methods. We used the XCLASS for line identification. Under the assumption of local thermodynamic equilibrium, we derived the rotation temperature and column density of HC3N* transitions in hot cores. Additionally, we calculated the H-2 column density and number density, along with the abundance of HC3N* relative to H-2, to enable a comparison of the physical properties of hot cores with different numbers of HC3N* states. Results. We have detected HC3N* lines in 52 hot cores, 29 of which show more than one vibrationally excited state. Hot cores with higher gas temperatures have more detections of these vibrationally excited lines. The excitation of HC3N* requires dense environments, and its spatial distribution is affected by the presence of UC HII regions. The observed column density of HC3N* contributes to the number of HC3N* states in hot-core environments. Conclusions. After analyzing the various factors influencing HC3N* excitation in hot cores, we conclude that the excitation of HC3N* is mainly driven by mid-IR pumping, while collisional excitation is ineffective. |
| WOS关键词 | STAR-FORMING REGIONS ; MASSIVE STAR ; 3-MILLIMETER OBSERVATIONS ; CHEMICAL EVOLUTION ; ORION ; SUBMILLIMETER ; CYANOACETYLENE ; MILLIMETER ; HNCO ; TURBULENCE |
| 资助项目 | National Key R&D Program of China[2022YFA1603100] ; National Natural Science Foundation of China (NSFC)[12033005] ; National Natural Science Foundation of China (NSFC)[12073061] ; National Natural Science Foundation of China (NSFC)[12122307] ; Xinjiang Uygur Autonomous Region ; National Aeronautics and Space Administration[80NM0018D0004] ; National Aeronautics and Space Administration[FB210003] ; NSFC[12203011] ; Yunnan Provincial Department of Science and Technology[202101BA070001-261] ; Yunnan Provincial Department of Science and Technology[JP22H01271] ; Yunnan Provincial Department of Science and Technology[JP23H01221] ; JSPS ; Yoshinori Ohsumi Fund (Yoshinori Ohsumi Award for Fundamental Research) ; Fondecyt Postdoctoral fellowship[FB210003] ; Fondecyt Postdoctoral fellowship[3220162] ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology[NRF-2019R1A2C1010851] ; Korea Astronomy and Space Science Institute - Korea government (MSIT)[2024-1-841-00] ; Yunnan Fundamental Research Project[202301AT070118] ; Yunnan Fundamental Research Project[202401AS070121] ; Xingdian Talent Support Plan-Youth Project ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2024D01E37] ; National Science Foundation of China[12473025] ; Chinese Academy of Sciences (CAS) ; CAS South America Center for Astronomy (CAS-SACA) in Santiago, Chile ; ALMA[2019.1.00685] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001418747000031 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Xinjiang Uygur Autonomous Region ; National Aeronautics and Space Administration ; NSFC ; Yunnan Provincial Department of Science and Technology ; JSPS ; Yoshinori Ohsumi Fund (Yoshinori Ohsumi Award for Fundamental Research) ; Fondecyt Postdoctoral fellowship ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Korea Astronomy and Space Science Institute - Korea government (MSIT) ; Yunnan Fundamental Research Project ; Xingdian Talent Support Plan-Youth Project ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Science Foundation of China ; Chinese Academy of Sciences (CAS) ; CAS South America Center for Astronomy (CAS-SACA) in Santiago, Chile ; ALMA |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7448]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Chen, Li; Qin, Sheng-Li; Liu, Tie |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Zhuhai 519082, Guangdong, Peoples R China 2.Chuxiong Normal Univ, Inst Astrophys, Sch Phys & Elect Sci, Chuxiong 675000, Peoples R China 3.Inst Sci Tokyo, Dept Earth & Planetary Sci, Tokyo 1528551, Japan 4.Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa, Tokyo 1818588, Japan 5.SOKENDAI, Grad Univ Adv Studies, Dept Astron Sci, 2-21-1 Osawa, Tokyo 1818588, Japan 6.Univ Oslo, Rosseland Ctr Solar Phys, POB 1029, N-0315 Oslo, Norway 7.Univ Oslo, Inst Theoret Astrophys, POB 1029, N-0315 Oslo, Norway 8.PHYS RES LAB, Ahmadabad 380009, India 9.Univ Catolica Norte, Inst Astron, Antofagasta, Chile 10.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany |
| 推荐引用方式 GB/T 7714 | Chen, Li,Qin, Sheng-Li,Liu, Tie,et al. The ALMA-ATOMS survey: Vibrationally excited HC3N lines in hot cores[J]. ASTRONOMY & ASTROPHYSICS,2025,694:A166. |
| APA | Chen, Li.,Qin, Sheng-Li.,Liu, Tie.,Goldsmith, Paul F..,Liu, Xunchuan.,...&Zhang, Yong.(2025).The ALMA-ATOMS survey: Vibrationally excited HC3N lines in hot cores.ASTRONOMY & ASTROPHYSICS,694,A166. |
| MLA | Chen, Li,et al."The ALMA-ATOMS survey: Vibrationally excited HC3N lines in hot cores".ASTRONOMY & ASTROPHYSICS 694(2025):A166. |
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来源：新疆天文台
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