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Isotopologues of dense gas tracers in nearby infrared bright galaxies

文献类型：期刊论文

作者Li, Fei3,4; Wang, Junzhi3,5; Fang, Min1; Li, Shanghuo2,3,4; Zhang, Zhi-Yu6; Gao, Yu7,8; Kong, Minzhi9
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2020-05-01
卷号494期号:1页码:1095-1113
关键词galaxies: individual: M 82, NGC 3079, NGC 3504, IC 694, NGC 4418, MrK 231, NGC 6946, NGC 6240
ISSN号0035-8711
DOI10.1093/mnras/staa676
英文摘要We present 1 and 3 mm observations of the C-13- and N-15-bearing isotopologues of dense gas tracers towards eight nearby infrared-bright galaxies. With the Institut de Radioastronomie Millimetrique 30-m telescope, we observed the J = 1-0 transitions of (HCN)-C-13, (HCN)-N-15, (HCO+)-C-13 , (HNC)-C-13, and (HNC)-N-15 towards M 82, NGC 3079, IC 694, Mrk 231, and NGC 6240. The J = 3-2 transition of (HCN)-C-13 was obtained in M 82, NGC 3079, NGC 3504, NGC 4418, NGC 6240, and NGC 6946, using the 10-m Submillimeter Telescope (SMT). We report the first detections of (HNC)-C-13 J = 1-0 and (HCN)-C-13 J = 3-2 in M 82, and (HCN)-C-13 J = 3-2 in NGC 6240 and NGC 3079. We find different line profiles between the J = 1-0 and 3-2 transitions of (HCN)-C-13 in both M 82 and NGC 3079. The optical depths of HCN show significant variations among the sample, indicating that dense gas masses estimated from the line luminosities of HCN J = 1-0 and 3-2 should be treated with caution for individual galaxies. Optical depth of HCN J = 3-2 is found to be higher than that of HCN J = 1-0 in M 82, NGC 3079, NGC 4418, and NGC 6240, which indicates that ground state transitions of dense gas tracers might better trace the star-forming gas than the high-J transitions. Based on the (HCN)-C-13/(HCN)-N-15 line ratios, with the double-isotopic method, low N-14/N-15 abundance ratios of 120 and 140 are found in NGC 3079 and Mrk 231, respectively.
WOS关键词MOLECULAR GAS ; STAR-FORMATION ; ARP 220 ; LINE ; MILLIMETER ; HCN ; STARBURSTS ; CN ; SUBMILLIMETER ; NGC-4418
资助项目National Key R&D Program of China[2017YFA0402704] ; Natural Science Foundation of China[11590783] ; Natural Science Foundation of Hebei Province[A2019205100] ; National Key Basic Research and Development Program of China[2017YFA0402704] ; National Natural Science Foundation of China[11861131007] ; National Natural Science Foundation of China[U1731237] ; National Natural Science Foundation of China[11420101002] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDJSSW-SLH008] ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000535885900084
出版者OXFORD UNIV PRESS
资助机构National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; Natural Science Foundation of Hebei Province ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; Natural Science Foundation of Hebei Province ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; Natural Science Foundation of Hebei Province ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of Hebei Province ; Natural Science Foundation of Hebei Province ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time ; Chemical abundances in the ISM: the litmus test of stellar IMF variations in galaxies across cosmic time
源URL[http://ir.bao.ac.cn/handle/114a11/54750]  
专题中国科学院国家天文台
通讯作者Li, Fei; Wang, Junzhi; Kong, Minzhi
作者单位1.Univ Arizona, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USA
2.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
3.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
6.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Rd, Nanjing 210023, Peoples R China
7.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
8.Chinese Acad Sci, Purple Mt Observ, 8 Yuanhua Rd, Nanjing 210034, Peoples R China
9.Hebei Normal Univ, 20 Rd East 2nd Ring South, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式
GB/T 7714		 Li, Fei,Wang, Junzhi,Fang, Min,et al. Isotopologues of dense gas tracers in nearby infrared bright galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,494(1):1095-1113.
APA Li, Fei.,Wang, Junzhi.,Fang, Min.,Li, Shanghuo.,Zhang, Zhi-Yu.,...&Kong, Minzhi.(2020).Isotopologues of dense gas tracers in nearby infrared bright galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,494(1),1095-1113.
MLA Li, Fei,et al."Isotopologues of dense gas tracers in nearby infrared bright galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494.1(2020):1095-1113.

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