Dense-gas properties in Arp 220 revealed by isotopologue lines

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 天体化学和行星科学实验室

	Dense-gas properties in Arp 220 revealed by isotopologue lines
	Wang, Junzhi 1,2; Zhang, Zhi-Yu 3,4; Zhang, Jiangshui 5; Shi, Yong 2,6,7; Fang, Min8,9
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-02-01
卷号	455 期号:4 页码:3986-3990
关键词	galaxies: ISM galaxies: starburst galaxies: individual: (Arp 220) ISM: molecules radio lines: galaxies
英文摘要	We present observations of isotopologue lines of dense-gas tracers at 3 mm and 1 mm towards the nearest ultra-luminous infrared galaxy Arp 220. The 3-mm and 1-mm observations were performed with the Institut de Radioastronomie Millimetrique 30-m telescope and the Atacama Pathfinder Experiment 12-m telescope, respectively. We detected (HCN)-C-13 and (HNC)-C-13 in 1-0 and 3-2, and (HCN)-N-15 1-0, among which (HCN)-N-15 1-0 and (HNC)-C-13 1-0 are detected in Arp 220 for the first time. The (HCO+)-C-13 1-0 and 3-2 lines are unlikely to be detected because of the confusion of SiO lines. We find that the ratio of the line brightness temperatures of (HNC)-C-13 3-2/1-0 is 2.4, which is significantly higher than that of (HCN)-C-13 3-2/1-0 (0.73). This indicates that (HNC)-C-13 and HNC molecules are in denser regions than (HCN)-C-13 and HCN molecules. With the line ratio of (HCN)-C-13 1-0 and (HCN)-N-15 1-0, the N-14/N-15 ratio was estimated to be 440(-82)(+140), which is larger than that of the local interstellar medium.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	NUCLEAR STARBURST ENVIRONMENT ; RICH ACTIVE GALAXIES ; STAR-FORMATION ; MOLECULAR GAS ; NEARBY GALAXIES ; ULTRALUMINOUS GALAXIES ; NGC 6240 ; TRACERS ; RATIO ; N-15
收录类别	SCI
语种	英语
WOS记录号	WOS:000368009300047
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16111]
专题	紫金山天文台_天体化学和行星科学实验室
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland 4.ESO, D-85748 Garching, Munich, Germany 5.GuangZhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China 6.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 7.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing, Jiangsu, Peoples R China 8.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 9.Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain
推荐引用方式 GB/T 7714	Wang, Junzhi,Zhang, Zhi-Yu,Zhang, Jiangshui,et al. Dense-gas properties in Arp 220 revealed by isotopologue lines[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,455(4):3986-3990.
APA	Wang, Junzhi,Zhang, Zhi-Yu,Zhang, Jiangshui,Shi, Yong,&Fang, Min.(2016).Dense-gas properties in Arp 220 revealed by isotopologue lines.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,455(4),3986-3990.
MLA	Wang, Junzhi,et al."Dense-gas properties in Arp 220 revealed by isotopologue lines".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 455.4(2016):3986-3990.