lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068

doi:10.1051/0004-6361/201935800

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 恒星形成与演化研究团组

	lambda=2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068
	Qiu, Jianjie 3; Zhang, Jiangshui 5; Zhang, Yong 3,6; Jia, Lanwei 5; Tang, Xindi 1,2,4
刊名	ASTRONOMY & ASTROPHYSICS
	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.
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关键词	DENSE MOLECULAR GAS ; HNC LINE EMISSION ; X-RAY ; ACTIVE NUCLEUS ; REACTIVE IONS ; GALAXIES ; CHEMISTRY ; HOC+ ; HCN ; ABUNDANCE
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	EDP SCIENCES S A
WOS记录号	WOS:000517308400001
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
内容类型	期刊论文
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.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China 5.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China 6.Univ Hong Kong, Lab Space Res, Hong Kong, 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.