Chemical models of adenine precursors cyanamide and carbodiimide in the interstellar medium
文献类型：期刊论文
| 作者 | Zhang, Xia3,4 ; Quan, Donghui3,5; Li, Runxia4; Esimbek, Jarken3,4,6; Chen, Long-Fei5; Zhao, Guoming1; Zhou, Yan2
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| 刊名 | Monthly Notices of the Royal Astronomical Society
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| 出版日期 | 2023-03-01 |
| 卷号 | 521期号:1页码:1578-1589 |
| 关键词 | astrochemistry molecular processes ISM: abundances ISM: molecules complex organic-molecules coupled-cluster singles spectral-line survey thermal-reaction hot cores gas alma chemistry phase photodissociation Astronomy & Astrophysics |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stad627 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Cyanamide (NH2CN) and its isomer, carbodiimide (HNCNH), may form adenine in the interstellar medium (ISM) via a series of reactions. Therefore, they are considered key prebiotic molecules in the study of the origin of life. We used the three-phase NAUTILUS chemical code, which includes the gas, the dust surface, and the icy mantle, to investigate the formation and destruction of cyanamide and carbodiimide. We added over 200 new chemical reactions of the two isomers and related species and established a relatively complete network. We applied cold core, hot corino/core, and shock models to simulate the different physical environments, and found that the two isomers are mainly produced by the free radical reactions on grain surfaces. Our simulated results suggest that cyanamide and carbodiimide molecules come from surface chemistry at early evolutionary stages. Then they are released back to the gas phase, either by thermal process (in hot cores, hot corinos) or by shock-induced desorption (in shock regions). We speculate that it is an inefficient route to form a tautomer of adenine by starting from molecules cyanoacetylene (C3NH), cyanamide, and carbodiimide in ISM. |
| 语种 | 英语 |
| WOS记录号 | WOS:000952640100002 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6658]  |
| 专题 | 天体化学研究团组 恒星形成与演化研究团组 |
| 通讯作者 | Quan, Donghui |
| 作者单位 | 1.School of Science, Jilin Institute of Chemical Technology, Jilin, Jilin 132022, China; 2.BinZhou University, Huanghe Road, Binzhou City, Shandong, 256600, China 3.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi, Xinjiang 830011, China; 4.Xinjiang Key Laboratory of Radio Astrophysics, 150 Science1-Street, Urumqi 830011, China; 5.Research Center for Intelligent Computing Platforms, Zhejiang Laboratory, Hangzhou 311100, China; 6.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Urumqi 830011, China; |
| 推荐引用方式 GB/T 7714 | Zhang, Xia,Quan, Donghui,Li, Runxia,et al. Chemical models of adenine precursors cyanamide and carbodiimide in the interstellar medium[J]. Monthly Notices of the Royal Astronomical Society,2023,521(1):1578-1589. |
| APA | Zhang, Xia.,Quan, Donghui.,Li, Runxia.,Esimbek, Jarken.,Chen, Long-Fei.,...&Zhou, Yan.(2023).Chemical models of adenine precursors cyanamide and carbodiimide in the interstellar medium.Monthly Notices of the Royal Astronomical Society,521(1),1578-1589. |
| MLA | Zhang, Xia,et al."Chemical models of adenine precursors cyanamide and carbodiimide in the interstellar medium".Monthly Notices of the Royal Astronomical Society 521.1(2023):1578-1589. |
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