Millimetre line observations towards four local galaxies
文献类型：期刊论文
| 作者 | Li, Fei2,3,4; Wang, Junzhi2,5; Kong, Minzhi4; Li, Shanghuo1,2,3 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 482期号:4页码:4763-4776 |
| ISSN号 | 0035-8711 |
| 关键词 | galaxies: active galaxies: individual: NGC 3079, NGC 4258, NGC 6240, VII Zw 31 galaxies: ISM |
| DOI | 10.1093/mnras/sty2880 |
| 英文摘要 | We present results of millimetre line observations towards four local gas-rich galaxies (NGC 3079, NGC 4258, NGC 6240, and VII Zw 31) with the IRAM 30m millimetre telescope. More than 33 lines in these four sources were detected, including normal dense gas tracers (HCN 1-0, HCO+ 1-0, and C2H 1-0, etc.) and their isotopic species. (HCN)-C-13 (1-0) and (HCO+)-C-13 (1-0) are detected for the first time in NGC 4258. Optical depths of HCN 1-0 and HCO+ 1-0 were estimated with detected isotopic lines in NGC 4258, which were 4.1 and 2.6, respectively. HC3N J = 29-28, which requires high-volume density and high temperature to excite, was detected in NGC 6240. High ratios of HCO+/HCN in NGC 4258 and NGC 6240 imply that this ratio might not be a perfect diagnostic tool between active galactic nucleus and starburst environments, due to contamination/combination of both processes. The low HC3N/HCN line ratios with less than 0.15 in NGC 4258, NGC 6240 and the non-detection of HC3N line in NGC 3079 and VII Zw 31 indicate that these four galaxies are HC3N-poor galaxies. The variation of fractional abundance of CN in different types of galaxies is large. |
| 资助项目 | National Key R&D Program of China[2017YFA0402704] ; Natural Science Foundation of China[11590783] ; Youth Foundation of Hebei Province of China[A2011205067] ; National Youth Fund[11303008] ; Astronomical Union Fund[U1831126] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000462327300036 |
| 源URL | [http://119.78.226.72/handle/331011/31857]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Li, Fei; Wang, Junzhi; Kong, Minzhi |
| 作者单位 | 1.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 2.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 4.Hebei Normal Univ, 20 Rd East 2nd Ring South, Shijiazhuang 050024, Hebei, Peoples R China 5.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Fei,Wang, Junzhi,Kong, Minzhi,et al. Millimetre line observations towards four local galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(4):4763-4776. |
| APA | Li, Fei,Wang, Junzhi,Kong, Minzhi,&Li, Shanghuo.(2019).Millimetre line observations towards four local galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(4),4763-4776. |
| MLA | Li, Fei,et al."Millimetre line observations towards four local galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.4(2019):4763-4776. |
入库方式： OAI收割
来源：上海天文台
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。