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
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2019-08-22 |
| 卷号 | 629页码:A6 |
| 关键词 | galaxies: abundances galaxies: starburst galaxies: nuclei galaxies: ISM radio lines: ISM |
| ISSN号 | 1432-0746 |
| DOI | 10.1051/0004-6361/201935603 |
| 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 |
| WOS记录号 | WOS:000482762600006 |
| 出版者 | EDP SCIENCES S A |
| 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 |
| 推荐引用方式 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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来源：新疆天文台
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