A deep search for C2H in the oxygen-rich post-AGB star OH 231.8+4.2
文献类型：期刊论文
| 作者 | Yang, Jianchao1,4; Yang, Xiaofeng1,3 ; Zhu, Cheng1,2
|
| 刊名 | FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
 |
| 出版日期 | 2024-06-25 |
| 卷号 | 11页码:1431250 |
| 关键词 | post-AGB star circumstellar envelopes (CSEs) column density C2H OH 231.8+4.2 |
| ISSN号 | 2296-987X |
| DOI | 10.3389/fspas.2024.1431250 |
| 产权排序 | 1 |
| 英文摘要 | In carbon-rich environment, C2H emission is seen to be associated with HC3N, but whether it can trace the HC3N molecule in oxygen-rich environment is unknown. Here, we have searched for rotational emission from ethynyl radical (C2H) in the oxygen-rich circumstellar envelope (CSE) of the post-asymptotic giant branch (post-AGB) star OH 231.8+4.2, a renowned galactic proto-planetary nebula (PPN) known to display cyanoacetylene (HC3N) emission. Our observations were conducted using the James Clerk Maxwell Telescope (JCMT), and the total on-source time is 11.9 h. Base on local thermodynamic equilibrium (LTE) excitation analysis, we have calculated the column density and the abundance relative to H-2 for C2H. The calculated column density for C2H is less than 1.4 x 10(13) cm(-2), which corresponds to a fractional abundance, f (C2H), less than 4.5 x 10(-9). This inference suggests that the typical transformation pathway from C2H and C2H2 to HC3N may not play a significant role in O-rich environments. It indicates the presence of alternative, unidentified pathways that contribute to the formation of HC3N in O-rich circumstellar envelopes. |
| WOS关键词 | OUTFLOW |
| 资助项目 | National SKA Program of China[2022SKA0110203] ; Korea Astronomy and Space Science Institute ; National Key R&D Program of China[2017YFA0402700] ; JCMT[E21AZ002] ; JCMT[M23BP059] ; [2024] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001265477400001 |
| 出版者 | FRONTIERS MEDIA SA |
| 资助机构 | National SKA Program of China ; Korea Astronomy and Space Science Institute ; National Key R&D Program of China ; JCMT |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6827]  |
| 专题 | 射电天文研究室_理论天体物理研究团组 |
| 通讯作者 | Yang, Xiaofeng |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci BNLMS, Beijing, Peoples R China 3.Xinjiang Key Lab Radio Astrophys, Urumqi, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jianchao,Yang, Xiaofeng,Zhu, Cheng. A deep search for C2H in the oxygen-rich post-AGB star OH 231.8+4.2[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2024,11:1431250. |
| APA | Yang, Jianchao,Yang, Xiaofeng,&Zhu, Cheng.(2024).A deep search for C2H in the oxygen-rich post-AGB star OH 231.8+4.2.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,11,1431250. |
| MLA | Yang, Jianchao,et al."A deep search for C2H in the oxygen-rich post-AGB star OH 231.8+4.2".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 11(2024):1431250. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。