Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2

doi:10.3847/1538-4357/aa9069

	Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2
	Zheng, Xingwu 2,3,6; Li, Juan 1,6; Chen, Xi 1,6; Li, Di5,6 ; Wu, Yajun 1,6; Dong, Jian 1,6; Zhao, Ronbing 1,6; Gou, Wei 1,6; Wang, Jinqing 1,6; Li, Shanghuo 1,4
刊名	ASTROPHYSICAL JOURNAL
	2017-11-10
卷号	849 期号:2
关键词	Ism: Abundances Ism: Clouds Ism: Individual (Saggitarius B2) Ism: Molecules Radio Lines: Ism
DOI	10.3847/1538-4357/aa9069
文献子类	Article
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
资助机构	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)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20209]
专题	国家天文台_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.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China 6.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Xingwu,Li, Juan,Chen, Xi,et al. Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2[J]. ASTROPHYSICAL JOURNAL,2017,849(2).
APA	Zheng, Xingwu.,Li, Juan.,Chen, Xi.,Li, Di.,Wu, Yajun.,...&Wang, Junzhi.(2017).Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2.ASTROPHYSICAL JOURNAL,849(2).
MLA	Zheng, Xingwu,et al."Widespread Presence of Glycolaldehyde and Ethylene Glycol around Sagittarius B2".ASTROPHYSICAL JOURNAL 849.2(2017).