lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068
文献类型：期刊论文
| 作者 | Qiu, Jianjie6; Zhang, Jiangshui5; Zhang, Yong4,6; Jia, Lanwei5; Tang, Xindi1,2,3
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2020-02-21 |
| 卷号 | 634页码:22 |
| 关键词 | ISM: molecules galaxies: ISM galaxies: individual: NGC 1068 galaxies: nuclei galaxies: active |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/201935800 |
| 产权排序 | 5 |
| 英文摘要 | Aims. We investigate the physical and chemical conditions of molecular gas in the circumnuclear disk (CND) region of NGC 1068.Methods. We carried out a spectral line survey with the IRAM 30 m telescope toward the center of NGC 1068 and mainly focused on the 2 mm band with a frequency coverage of 160.7-168.6 GHz and 176.5-184.3 GHz.Results. Fifteen lines are detected in NGC 1068, eight of which are new detections for this galaxy. We derive the rotation temperatures and column densities of fourteen molecular species.Conclusions. Based on the [HCO+ (2-1)]/[HOC+ (2-1)] ratio, we obtain a high ionization degree in the CND of NGC 1068. It is found that HC3N is concentrated in the east knot, while (CCH)-C-13, CH3CN, SO, HOC+, CS, CH3CCH, and H2CO are concentrated in the west knot. Compared to the star-forming galaxies M 82 and NGC 253, the chemistry of NGC 1068 might be less strongly affected by the UV radiation field, and its kinetic temperature might be lower. |
| WOS关键词 | DENSE MOLECULAR GAS ; HNC LINE EMISSION ; X-RAY ; ACTIVE NUCLEUS ; REACTIVE IONS ; GALAXIES ; CHEMISTRY ; HOC+ ; HCN ; ABUNDANCE |
| 资助项目 | Natural Science Foundation of China (NSFC)[11973099] ; Natural Science Foundation of China (NSFC)[11590782] ; China Postdoctoral Science Foundation[2019M653144] ; Guangzhou Education Bureau[1201410593] ; Heaven Lake Hundred Talent Program of Xinjiang Uygur Autonomous Region of China |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000517308400001 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Natural Science Foundation of China (NSFC) ; China Postdoctoral Science Foundation ; Guangzhou Education Bureau ; Heaven Lake Hundred Talent Program of Xinjiang Uygur Autonomous Region of China |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/3389]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Qiu, Jianjie |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.Univ Hong Kong, Lab Space Res, Hong Kong, Peoples R China 5.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China 6.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Jianjie,Zhang, Jiangshui,Zhang, Yong,et al. lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068[J]. ASTRONOMY & ASTROPHYSICS,2020,634:22. |
| APA | Qiu, Jianjie,Zhang, Jiangshui,Zhang, Yong,Jia, Lanwei,&Tang, Xindi.(2020).lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068.ASTRONOMY & ASTROPHYSICS,634,22. |
| MLA | Qiu, Jianjie,et al."lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068".ASTRONOMY & ASTROPHYSICS 634(2020):22. |
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来源：新疆天文台
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