Spatial distributions of 13CO and CS in a carbon-rich AGB star IRC+10216
文献类型：期刊论文
| 作者 | Tuo, Juan1,5 ; Yang, Xiaofeng1,4; Sun, Jixian2,3
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| 刊名 | FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
 |
| 出版日期 | 2024-06-26 |
| 卷号 | 11页码:1431250 |
| 关键词 | asymptotic giant branch star circumstellar envelope IRC+10216 molecular line (CO)-C-13 CS |
| ISSN号 | 2296-987X |
| DOI | 10.3389/fspas.2024.1434219 |
| 产权排序 | 1 |
| 英文摘要 | IRC+10216 is the typical carbon-rich asymptotic giant branch star, and more than 100 species have been observed in its circumstellar envelope so far. The use of interferometric arrays to map molecular emission in this source has been widely reported, but to study the angular extent of molecular emission, single-dish mapping must be employed. We report here the mapping of the (CO)-C-13 J = 1-0 and CS J = 2-1 lines towards IRC+10216 using the 13.7 m mm-wave radio telescope at Purple Mountain Observatory. As far as we know, these maps are the largest published (CO)-C-13 J = 2-1 and CS J = 2-1 images to date. Both molecules have roughly spherically symmetric distribution, with (CO)-C-13 having an emission radius of over 80 '' and CS extending up to similar to 50 ''. Assuming that the two molecules are in local thermodynamic equilibrium, the column density and fractional abundance relative to H-2 for (CO)-C-13 and the lower limits for CS are obtained. They are 4.35 x 10(16) cm(-2) and > 4.72 x 10(14) cm(-2), and 5.25 x 10(-5) and > 2.56 x 10(-7) for (CO)-C-13 and CS, respectively. |
| WOS关键词 | CIRCUMSTELLAR ENVELOPE ; LINE SURVEY ; IRC +10216 ; SIS ; EMISSION ; SULFUR |
| 资助项目 | National SKA Program of China[2022SKA0110203] ; XY's CAS Pioneer Hundred Talents Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001268488900001 |
| 出版者 | FRONTIERS MEDIA SA |
| 资助机构 | National SKA Program of China ; XY's CAS Pioneer Hundred Talents Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6842]  |
| 专题 | 射电天文研究室_理论天体物理研究团组 天体化学研究团组 |
| 通讯作者 | Yang, Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Xinjiang, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China 4.Xinjiang Key Lab Radio Astrophys, Urumqi, Xinjiang, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tuo, Juan,Yang, Xiaofeng,Sun, Jixian. Spatial distributions of 13CO and CS in a carbon-rich AGB star IRC+10216[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2024,11:1431250. |
| APA | Tuo, Juan,Yang, Xiaofeng,&Sun, Jixian.(2024).Spatial distributions of 13CO and CS in a carbon-rich AGB star IRC+10216.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,11,1431250. |
| MLA | Tuo, Juan,et al."Spatial distributions of 13CO and CS in a carbon-rich AGB star IRC+10216".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 11(2024):1431250. |
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来源：新疆天文台
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