Chemical models of interstellar cyanomethanimine isomers
文献类型：期刊论文
| 作者 | Zhang, Xia1,2 ; Quan, Donghui1,3; Chang, Qiang1,4; Herbst, Eric5,6; Esimbek, Jarken1,7; Webb, Matthew3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2020-09-01 |
| 卷号 | 497期号:1页码:609-625 |
| 关键词 | astrochemistry shock waves ISM: abundances ISM: molecules |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/staa1979 |
| 产权排序 | 1 |
| 英文摘要 | The E-isomer of cyanomethanimine (HNCHCN) was first identified in Sagittarius B2(N) (Sgr B2(N)) by a comparison of the publicly available Green Bank Telescope (GBT) PRIMOS survey with laboratory rotational spectra. Recently, Z-cyanomethanimine was detected in the quiescent molecular cloud G+0.693-0.027 with the IRAM30-m telescope. Cyanomethanimine is a chemical intermediate in the proposed synthetic routes of adenine, and may play an important role in forming biological molecules in the interstellar medium. Here we present a new modelling study of cyanomethanimine, using the NAUTILUS gas-grain reaction network and code with the addition of over 400 chemical reactions of the three cyanomethanimine isomers and related species. We apply cold isothermal core, hot core, and C-type shock models to simulate the complicated and heterogeneous physical environment in and in front of Sgr B2(N), and in G+0.693-0.027. We identify the major formation and destruction routes of cyanomethanimine, and find that the calculated abundances of the cyanomethanimine isomers and the ratio of Z-isomer to E-isomer are both in reasonable agreement with observations for selected environments. In particular, we conclude that these isomers are most likely formed within or near the hot core without the impact of shocks, or in the cold regions with shocks. |
| URL标识 | 查看原文 |
| WOS关键词 | GALACTIC-CENTER ; GAS-PHASE ; ROTATIONAL SPECTRUM ; ORGANIC-MOLECULES ; SAGITTARIUS B2 ; CHEMISTRY ; CLOUDS ; HCN ; EMISSION ; ENVELOPE |
| 资助项目 | National Natural Science Foundation of China[11973075] ; National Natural Science Foundation of China[11673054] ; National Natural Science Foundation of China[11433008] ; National Science Foundation (USA)[AST-1906489] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000574919600042 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Science Foundation (USA) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/3688]  |
| 专题 | 天体化学研究团组 |
| 通讯作者 | Quan, Donghui |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Eastern Kentucky Univ, Dept Chem, Richmond, KY 40475 USA 4.Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo 255000, Peoples R China 5.Univ Virginia, Dept Chem, Charlottesville, VA 22904 USA 6.Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA 7.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xia,Quan, Donghui,Chang, Qiang,et al. Chemical models of interstellar cyanomethanimine isomers[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,497(1):609-625. |
| APA | Zhang, Xia,Quan, Donghui,Chang, Qiang,Herbst, Eric,Esimbek, Jarken,&Webb, Matthew.(2020).Chemical models of interstellar cyanomethanimine isomers.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,497(1),609-625. |
| MLA | Zhang, Xia,et al."Chemical models of interstellar cyanomethanimine isomers".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 497.1(2020):609-625. |
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来源：新疆天文台
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