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Dense-gas properties in Arp 220 revealed by isotopologue lines
Wang, Junzhi1,2; Zhang, Zhi-Yu3,4; Zhang, Jiangshui5; Shi, Yong2,6,7; Fang, Min8,9
2016-02-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume455Issue:4Pages:3986-3990
AbstractWe 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.
KeywordGalaxies: Ism Galaxies: Starburst Galaxies: Individual: (Arp 220) Ism: Molecules Radio Lines: Galaxies
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stv2580
WOS KeywordNUCLEAR STARBURST ENVIRONMENT ; RICH ACTIVE GALAXIES ; STAR-FORMATION ; MOLECULAR GAS ; NEARBY GALAXIES ; ULTRALUMINOUS GALAXIES ; NGC 6240 ; TRACERS ; RATIO ; N-15
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000368009300047
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16111
Collection天体化学和行星科学实验室
Affiliation1.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
Recommended Citation
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.
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