Photochemical origin of SiC2 in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA
文献类型：期刊论文
| 作者 | Feng, Yanan16,17; Li, Xiaohu15,17 ; Millar, Tom J.14; Szczerba, Ryszard13; Wang, Ke12; Quan, Donghui11,17; Qin, Shengli10,17; Fang, Xuan7,8,9,17; Tuo, Juan16,17; Miao, Zhenzhen17
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| 刊名 | FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
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| 出版日期 | 2023-08-14 |
| 卷号 | 10页码:11 |
| ISSN号 | 2296-987X |
| 关键词 | asymptotic giant branch stars mass loss circumstellar envelope C-rich SiC2 AI Vol II Lup RAFGL 4211 |
| DOI | 10.3389/fspas.2023.1215642 |
| 通讯作者 | Li, Xiaohu(xiaohu.li@xao.ac.cn) |
| 英文摘要 | The fact that whether SiC2 is a parent species, formed in the photosphere or as a by-product of high-temperature dust formation, or a daughter species, formed in chemistry driven by the photodestruction of the parent species in the outer envelope, has been debated for a long time. In this study, we analyze the Atacama Large Millimeter Array (ALMA) observations of four SiC2 transitions in the circumstellar envelopes (CSEs) of three C-rich asymptotic giant branch (AGB) stars (AI Vol, II Lup, and RAFGL 4211) and find that SiC2 exhibits an annular, shell-like distribution in these targets, suggesting that SiC2 can be a daughter species in the CSEs of carbon-rich AGB stars. The results may provide important references for future chemical models. |
| WOS关键词 | MOLECULAR LINE SURVEY ; MASS-LOSS RATES ; SILICON CHEMISTRY ; INNER WIND ; ABUNDANCES ; IRC+10216 ; MAPS |
| 资助项目 | XL acknowledges the support from the Xinjiang Tianchi project (2019). TM is grateful to the Leverhulme Trust for the award of an Emeritus Fellowship. This work was also funded by the National Science Foundation of China (12173023), the China Manned Space P[CMS-CSST-2021-A09] ; Leverhulme Trust - National Science Foundation of China[11973013] ; China Manned Space Project[22022YFA1603102] ; National Science Foundation of China[11973075] ; National Key Research and Development Program of China[2023-CX-TD-49] ; National Natural Science Foundation of China ; Innovation Capability Support Program of Shaanxi Province ; Xinjiang Uygur Autonomous Region of China ; [12173023] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:001055594900001 |
| 资助机构 | XL acknowledges the support from the Xinjiang Tianchi project (2019). TM is grateful to the Leverhulme Trust for the award of an Emeritus Fellowship. This work was also funded by the National Science Foundation of China (12173023), the China Manned Space P ; Leverhulme Trust - National Science Foundation of China ; China Manned Space Project ; National Science Foundation of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Innovation Capability Support Program of Shaanxi Province ; Xinjiang Uygur Autonomous Region of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5418]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Li, Xiaohu |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou, Peoples R China 2.Xi An Jiao Tong Univ, Sch Phys, MOE Key Lab Nonequilibrium Synth & Modulat Condens, Xian, Peoples R China 3.Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing, Peoples R China 5.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing, Peoples R China 6.Peking Univ DoA PKU, Dept Astron, Beijing, Peoples R China 7.Univ Hong Kong, Fac Sci, Lab Space Res, Hangzhou, Peoples R China 8.Univ Hong Kong, Fac Sci, Dept Phys, Hangzhou, Peoples R China 9.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China 10.Yunnan Univ, Dept Astron, Kunming, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Yanan,Li, Xiaohu,Millar, Tom J.,et al. Photochemical origin of SiC2 in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2023,10:11. |
| APA | Feng, Yanan.,Li, Xiaohu.,Millar, Tom J..,Szczerba, Ryszard.,Wang, Ke.,...&Zhang, Yong.(2023).Photochemical origin of SiC2 in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,10,11. |
| MLA | Feng, Yanan,et al."Photochemical origin of SiC2 in the circumstellar envelope of carbon-rich AGB stars revealed by ALMA".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 10(2023):11. |
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来源：新疆天文台
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