中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
ALMA view of the C-12/C-13 isotopic ratio in starburst galaxies

文献类型:期刊论文

作者Tang, X. D.1,2,3; Henkel, C.1,3,4; Menten, K. M.3; Gong, Y.3; Martin, S.5,6; Muehle, S.7; Aalto, S.8; Muller, S.8; Garcia-Burillo, S.9; Levshakov, S.10
刊名ASTRONOMY & ASTROPHYSICS
出版日期2019-08-22
卷号629页码:A6
ISSN号1432-0746
关键词galaxies: abundances galaxies: starburst galaxies: nuclei galaxies: ISM radio lines: ISM
DOI10.1051/0004-6361/201935603
产权排序1
英文摘要We derive molecular-gas-phase C-12/C-13 isotope ratios for the central few hundred parsecs of the three nearby starburst galaxies NGC 253, NGC 1068, and NGC 4945 making use of the lambda similar to 3 mm (CN)-C-12 and (CNN)-C-13= 1-0 lines in the ALMA Band 3. The C-12/C-13 isotopic ratios derived from the ratios of these lines range from 30 to 67 with an average of 41.6 +/- 0.2 in NGC 253, from 24 to 62 with an average of 38.3 +/- 0.4 in NGC 1068, and from 6 to 44 with an average of 16.9 +/- 0.3 in NGC 4945. The highest C-12/C-13 isotopic ratios are determined in some of the outskirts of the nuclear regions of the three starburst galaxies. The lowest ratios are associated with the northeastern and southwestern molecular peaks of NGC 253, the northeastern and southwestern edge of the mapped region in NGC 1068, and the very center of NGC 4945. In the case of NGC 1068, the measured ratios suggest inflow from the outer part of NGC 1068 into the circum-nuclear disk through both the halo and the bar. Low C-12/C-13 isotopic ratios in the central regions of these starburst galaxies indicate the presence of highly processed material.
WOS关键词CIRCUMNUCLEAR MOLECULAR GAS ; H-II REGIONS ; NEARBY GALAXIES ; DENSE GAS ; INTERSTELLAR-MEDIUM ; ACTIVE NUCLEUS ; NGC 253 ; CN ; MILLIMETER ; FORMALDEHYDE
资助项目National Natural Science Foundation of China[11433008] ; The Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Collaborative Research Council 956 - Deutsche Forschungsgemeinschaft (DFG) ; Chinese Academy of Sciences President's International Fellowship Initiative[2019VMA0039] ; National key RD program[2017YFA0402702]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者EDP SCIENCES S A
WOS记录号WOS:000482762600006
源URL[http://ir.xao.ac.cn/handle/45760611-7/3030]  
专题研究单元未命名
通讯作者Tang, X. D.
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
4.King Abdulaziz Univ, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia
5.European Southern Observ, Alonso de Cordova 3107, Santiago 7630355, Chile
6.Joint ALMA Observ, Alonso de Cordova 3107, Santiago 7630355, Chile
7.Univ Bonn, Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany
8.Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Observ, S-43992 Onsala, Sweden
9.OAN IGN, Observ Madrid, Alfonso XII 3, Madrid 28014, Spain
10.Ioffe Phys Tech Inst, Polytekhn Skaya Str 26, St Petersburg 194021, Russia
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GB/T 7714
Tang, X. D.,Henkel, C.,Menten, K. M.,et al. ALMA view of the C-12/C-13 isotopic ratio in starburst galaxies[J]. ASTRONOMY & ASTROPHYSICS,2019,629:A6.
APA Tang, X. D..,Henkel, C..,Menten, K. M..,Gong, Y..,Martin, S..,...&Zhou, J. J..(2019).ALMA view of the C-12/C-13 isotopic ratio in starburst galaxies.ASTRONOMY & ASTROPHYSICS,629,A6.
MLA Tang, X. D.,et al."ALMA view of the C-12/C-13 isotopic ratio in starburst galaxies".ASTRONOMY & ASTROPHYSICS 629(2019):A6.

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