Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2
文献类型：期刊论文
| 作者 | Li, Juan1,2; Shen, Zhiqiang1,2; Wang, Junzhi1,2; Chen, Xi1,2; Li, Di2,3; Wu, Yajun1,2; Dong, Jian1,2; Zhao, Ronbing1,2; Gou, Wei1,2; Wang, Jinqing1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2017-11-10 |
| 卷号 | 849期号:2页码:9 |
| 关键词 | ISM: abundances ISM: clouds ISM: individual (Saggitarius B2) ISM: molecules radio lines: ISM |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aa9069 |
| 通讯作者 | Li, Juan(lijuan@shao.ac.cn) |
| 英文摘要 | We report the detection of widespread CH2OHCHO and HOCH2CH2OH emission in Galactic center giant molecular cloud Sagittarius B2 using the Shanghai Tianma 65 m Radio Telescope. Our observations show for the first time that the spatial distribution of these two important prebiotic molecules extends over 15 arcmin, corresponding to a linear size of approximately 36 pc. These two molecules are not just distributed in or near the hot cores. The abundance of these two molecules seems to decrease from the cold outer region to the central region associated with star formation activity. Results presented here suggest that these two molecules are likely to form through a low temperature process. Recent theoretical and experimental studies demonstrated that prebiotic molecules can be efficiently formed in icy grain mantles through several pathways. However, these complex ice features cannot be directly observed, and most constraints on the ice compositions come from millimeter observations of desorbed ice chemistry products. These results, combined with laboratory studies, strongly support the existence of abundant prebiotic molecules in ices. |
| WOS关键词 | COMPLEX ORGANIC-MOLECULES ; GALACTIC-CENTER ; INTERSTELLAR GLYCOLALDEHYDE ; GAS ; RECOMBINATION ; CONTINUUM ; SUGAR ; MM |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000414725900011 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/22565]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Li, Juan |
| 作者单位 | 1.Shanghai Astron Observ, Dept Radio Sci & Technol, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 5.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 6.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Juan,Shen, Zhiqiang,Wang, Junzhi,et al. Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2[J]. ASTROPHYSICAL JOURNAL,2017,849(2):9. |
| APA | Li, Juan.,Shen, Zhiqiang.,Wang, Junzhi.,Chen, Xi.,Li, Di.,...&Zheng, Xingwu.(2017).Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2.ASTROPHYSICAL JOURNAL,849(2),9. |
| MLA | Li, Juan,et al."Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2".ASTROPHYSICAL JOURNAL 849.2(2017):9. |
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来源：紫金山天文台
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