Chemical evolution of HC3N in dense molecular clouds
文献类型：期刊论文
| 作者 | Yu, Naiping1,2; Wang, Jun-Jie1,2; Xu, Jin-Long1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 489期号:4页码:4497-4512 |
| 关键词 | stars: formation stars: massive ISM: abundances ISM: clouds ISM: molecules |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stz2431 |
| 英文摘要 | We investigated the chemical evolution of HC3N in six dense molecular clouds, using archival available data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and the Millimeter Astronomy Legacy Team Survey at 90 GHz (MALT90). Radio sky surveys of the Multi-Array Galactic Plane Imaging Survey (MAGPIS) and the Sydney University Molonglo Sky Survey (SUMSS) indicate these dense molecular clouds are associated with ultracompact H II (UCH II) regions and/or classical H II regions. We find that in dense molecular clouds associated with normal classical H II regions, the abundance of HC3N begins to decrease or reaches a plateau when the dust temperature gets hot. This implies UV photons could destroy the molecule of HC3N. On the other hand, in the other dense molecular clouds associated with UCH II regions, we find the abundance of HC3N increases with dust temperature monotonously, implying HC3N prefers to be formed in warm gas. We also find that the spectra of HC3N (10-9) in G12.804-0.199 and RCW 97 show wing emissions, and the abundance of HC3N in these two regions increases with its non-thermal velocity width, indicating HC3N might be a shock origin species. We further investigated the evolutionary trend of N(N2H+)/N(HC3N) column density ratio, and found this ratio could be used as a chemical evolutionary indicator of cloud evolution after the massive star formation is started. |
| WOS关键词 | CORES ; CYANOPOLYYNES ; SPECTROSCOPY ; EMISSION ; REGIONS ; SEARCH ; HC5N ; NH3 |
| 资助项目 | Commonwealth of Australia ; Youth Innovation Promotion Association of CAS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000489302400002 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; Commonwealth of Australia ; Commonwealth of Australia ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28045]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Yu, Naiping; Xu, Jin-Long |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.NAOC TU Joint Ctr Astrophys, Lhasa 850000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Naiping,Wang, Jun-Jie,Xu, Jin-Long. Chemical evolution of HC3N in dense molecular clouds[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,489(4):4497-4512. |
| APA | Yu, Naiping,Wang, Jun-Jie,&Xu, Jin-Long.(2019).Chemical evolution of HC3N in dense molecular clouds.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,489(4),4497-4512. |
| MLA | Yu, Naiping,et al."Chemical evolution of HC3N in dense molecular clouds".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 489.4(2019):4497-4512. |
入库方式： OAI收割
来源：国家天文台
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。