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Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2
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; Li, Shanghuo1,4; Wang, Bingru2,3,4; Zheng, Xingwu2,5,6
2017-11-10
发表期刊ASTROPHYSICAL JOURNAL
卷号849期号:2
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.
文章类型Article
关键词Ism: Abundances Ism: Clouds Ism: Individual (Saggitarius B2) Ism: Molecules Radio Lines: Ism
WOS标题词Science & Technology ; Physical Sciences
资助者National Natural Science Foundation of China(11590780 ; National Natural Science Foundation of China(11590780 ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; International Partnership Program(114A11KYSB20160008) ; International Partnership Program(114A11KYSB20160008) ; Key Laboratory for Radio Astronomy, CAS ; Key Laboratory for Radio Astronomy, CAS ; 11590784 ; 11590784 ; U1431125 ; U1431125 ; 11773054) ; 11773054) ; National Natural Science Foundation of China(11590780 ; National Natural Science Foundation of China(11590780 ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; International Partnership Program(114A11KYSB20160008) ; International Partnership Program(114A11KYSB20160008) ; Key Laboratory for Radio Astronomy, CAS ; Key Laboratory for Radio Astronomy, CAS ; 11590784 ; 11590784 ; U1431125 ; U1431125 ; 11773054) ; 11773054)
DOI10.3847/1538-4357/aa9069
关键词[WOS]COMPLEX ORGANIC-MOLECULES ; GALACTIC-CENTER ; INTERSTELLAR GLYCOLALDEHYDE ; GAS ; RECOMBINATION ; CONTINUUM ; SUGAR ; MM
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(11590780 ; National Natural Science Foundation of China(11590780 ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; International Partnership Program(114A11KYSB20160008) ; International Partnership Program(114A11KYSB20160008) ; Key Laboratory for Radio Astronomy, CAS ; Key Laboratory for Radio Astronomy, CAS ; 11590784 ; 11590784 ; U1431125 ; U1431125 ; 11773054) ; 11773054) ; National Natural Science Foundation of China(11590780 ; National Natural Science Foundation of China(11590780 ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX1-YW-18) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; Scientific Program of Shanghai Municipality(08DZ1160100) ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; International Partnership Program(114A11KYSB20160008) ; International Partnership Program(114A11KYSB20160008) ; Key Laboratory for Radio Astronomy, CAS ; Key Laboratory for Radio Astronomy, CAS ; 11590784 ; 11590784 ; U1431125 ; U1431125 ; 11773054) ; 11773054)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000414725900011
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20209
专题射电天文研究部
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
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Li, Juan,Shen, Zhiqiang,Wang, Junzhi,et al. Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2[J]. ASTROPHYSICAL JOURNAL,2017,849(2).
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).
MLA Li, Juan,et al."Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2".ASTROPHYSICAL JOURNAL 849.2(2017).
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