TMRT OBSERVATIONS OF CARBON-CHAIN MOLECULES IN SERPENS SOUTH 1a
文献类型：期刊论文
| 作者 | Li, Juan1,2; Shen, Zhi-Qiang1,2; Wang, Junzhi1,2; Chen, Xi1,2; Wu, Ya-Jun1,2; Zhao, Rong-Bing1,2; Wang, Jin-Qing1,2; Zuo, Xiu-Ting1,2; Fan, Qing-Yuan1,2; Hong, Xiao-Yu1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-06-20 |
| 卷号 | 824期号:2 |
| 关键词 | Ism: Individual Objects (Serpens) Ism: Molecules |
| ISSN号 | 0004-637X |
| DOI | 10.3847/0004-637X/824/2/136 |
| 英文摘要 | We report Shanghai Tian Ma Radio Telescope (TMRT) detections of several long carbon-chain molecules in the C and Ku bands, including HC3N, HC5N, HC7N, HC9N, C3S, C6H, and C8H toward the starless cloud Serpens South 1a. We detected some transitions (HC9N J = 13-12, F = 12-11, and F = 14-13; (HCCCN)-C-13 J = 2-1, F = 1-0, and F = 1-1; (HCCCN)-C-13 J = 2-1, F = 2-2, F = 1-0, and F = 1-1; (HCCCN)-C-13 J = 2-1, F = 1-0, and F = 1-1) and resolved some hyperfine components (HC5N J = 6-5, F = 5-4; (HCCCN)-C-13 J = 2-1, F = 2-1) for the first time in the interstellar medium. The column densities of these carbon-chain molecules in the range 10(12)-10(13) cm(-2) are comparable to two carbon-chain molecule rich sources, TMC-1 and Lupus-1A. The abundance ratios are 1.00:(1.11 +/- 0.15):(1.47 +/- 0.18) for [(HCCCN)-C-13]:[(HCCCN)-C-13]:[(HCCCN)-C-13]. This result implies that the C-13 isotope is also concentrated in the carbon atom adjacent to the nitrogen atom in HC3N in Serpens South 1a, which is similar to TMC-1. The [HC3N]/[(HCCCN)-C-13] ratio of 78 +/- 9, the [HC3N]/[(HCCCN)-C-13] ratio of 70 +/- 8, and the [HC3N]/[(HCCCN)-C-13] ratio of 53 +/- 4 are also comparable to those in TMC-1. Serpens South 1a proves to be a suitable testing ground for understanding carbon-chain chemistry. |
| WOS关键词 | SPECTRAL-LINE SURVEY ; MASS PROTOSTAR IRAS-04368+2557 ; INTERSTELLAR CLOUDS ; C-13 ISOTOPOMERS ; DARK CLOUDS ; TMC-1 ; CORES ; HC3N ; TRANSITIONS ; ABUNDANCES |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000381912800072 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23635]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Juan |
| 作者单位 | 1.Shanghai Astron Observ, Dept Radio Sci & Technol, 80 Nandan RD, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100864, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Juan,Shen, Zhi-Qiang,Wang, Junzhi,et al. TMRT OBSERVATIONS OF CARBON-CHAIN MOLECULES IN SERPENS SOUTH 1a[J]. ASTROPHYSICAL JOURNAL,2016,824(2). |
| APA | Li, Juan.,Shen, Zhi-Qiang.,Wang, Junzhi.,Chen, Xi.,Wu, Ya-Jun.,...&Ye, Shu-Hua.(2016).TMRT OBSERVATIONS OF CARBON-CHAIN MOLECULES IN SERPENS SOUTH 1a.ASTROPHYSICAL JOURNAL,824(2). |
| MLA | Li, Juan,et al."TMRT OBSERVATIONS OF CARBON-CHAIN MOLECULES IN SERPENS SOUTH 1a".ASTROPHYSICAL JOURNAL 824.2(2016). |
入库方式： OAI收割
来源：紫金山天文台
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