Glycolonitrile (HOCH2CN) Chemistry in Star-forming Regions
文献类型：期刊论文
| 作者 | Zhao, Guoming5,6; Quan, Donghui4,5 ; Zhang, Xia5; Feng, Gang3; Zhou, Jianjun5; Li, Dalei5; Meng, Qingkuan2; Chang, Qiang2; Yang, Xue6; He, Mingwei6
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| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| 出版日期 | 2021-12-01 |
| 卷号 | 257期号:2页码:25 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ac17ee |
| 通讯作者 | Quan, Donghui(donghui.quan@eku.edu) |
| 英文摘要 | Glycolonitrile (HOCH2CN) is an attractive interstellar prebiotic molecule. Glycolonitrile is considered not only as a possible precursor for glycine but also as a key intermediate for adenine formation. Recently, HOCH2CN was detected toward IRAS 16293-2422 B with the Atacama Large Millimeter/submillimeter Array (ALMA). In this study we perform a comprehensive modeling study on HOCH2CN chemistry under the physical conditions of IRAS 16293-2422 B's cold envelope and hot corino evolutions using the astrochemical code NAUTILUS and the updated gas-grain chemical network. Our studies not only give the main reactions and the favorable physical conditions for the formation of HOCH2CN but also uncover that the observed glycolonitrile in the cold envelope originates from the gradual accumulation of the gas-phase molecules during the ambient cloud, freefall collapse, and warm-up phases of the cold envelope evolution, and in the hot corino it mainly comes from the accumulated ices during the hot corino evolution. Using the updated chemical network, we also conduct chemical simulations under the physical conditions of Sagittarius (Sgr) B2(N) evolution. The simulation results show that varying the cosmic-ray ionization rate is needed to best reproduce the observational upper limits of HOCH2CN and the observed abundances of CNCHO and CH2CNH toward Sgr B2(N). Moreover, we predict that HOCHCNH, OCH2CN, HOCHCN, HOCCNH, OCCNH, and OCCN have high abundances and may be detectable toward IRAS 16293-2422 B and Sgr B2(N). |
| WOS关键词 | CORRELATED MOLECULAR CALCULATIONS ; GAUSSIAN-BASIS SETS ; DENSE INTERSTELLAR CLOUDS ; GAS-GRAIN CHEMISTRY ; HYDROXYACETONITRILE HOCH2CN ; THERMOCHEMICAL KINETICS ; CORRELATION-ENERGY ; KETENIMINE CH2CNH ; ATOMS ; WATER |
| 资助项目 | National Natural Science Foundation of China[11973075] ; National Natural Science Foundation of China[11904126] ; National Natural Science Foundation of China[12173075] ; National Natural Science Foundation of China[1217030329] ; TianShan Youth Plan[2018Q084] ; Science and Technology Research Project of Jilin Provincial Education Department[JJKH20170215KJ] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000716729400001 |
| 资助机构 | National Natural Science Foundation of China ; TianShan Youth Plan ; Science and Technology Research Project of Jilin Provincial Education Department |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4359]  |
| 专题 | 恒星形成与演化研究团组 天体化学研究团组 |
| 通讯作者 | Quan, Donghui |
| 作者单位 | 1.Jilin Inst Chem Technol, Ctr Anal & Measurement, Jilin 132022, Jilin, Peoples R China 2.Shandong Univ Technol, Sch Phys & Optoelet Engn, Zibo 255000, Shandong, Peoples R China 3.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China 4.Eastern Kentucky Univ, Dept Chem, Richmond, KY 40475 USA 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 6.Jilin Inst Chem Technol, Sch Sci, Jilin 132022, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Guoming,Quan, Donghui,Zhang, Xia,et al. Glycolonitrile (HOCH2CN) Chemistry in Star-forming Regions[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2021,257(2):25. |
| APA | Zhao, Guoming.,Quan, Donghui.,Zhang, Xia.,Feng, Gang.,Zhou, Jianjun.,...&Ma, Ming-Shuo.(2021).Glycolonitrile (HOCH2CN) Chemistry in Star-forming Regions.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,257(2),25. |
| MLA | Zhao, Guoming,et al."Glycolonitrile (HOCH2CN) Chemistry in Star-forming Regions".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 257.2(2021):25. |
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来源：新疆天文台
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