Detection of hydroxyacetone in protostar IRAS 16293-2422 B

doi:10.1088/1674-4527/20/8/125

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	Detection of hydroxyacetone in protostar IRAS 16293-2422 B
	Zhou, Yan 2,3,4; Quan, Dong-Hui 1,4; Zhang, Xia 4; Qin, Sheng-Li 2,3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2020-08-01
卷号	20 期号:8 页码:125
关键词	ISM abundances ISM individual (IRAS 16293-2422B) ISM molecules
ISSN号	1674-4527
DOI	10.1088/1674-4527/20/8/125
产权排序	2
英文摘要	Hydroxyacetone (CH3COCH2OH) is one of the smallest molecules that contain both hydroxyl and carbonyl group on neighboring carbon atoms. This steric configuration is characteristic of saccharides and determines their biochemical activity. The attempt to search for hydroxyacetone toward the massive star formation region Sagittarius B2(N) was unsuccessful. Here we report the first detection of CH3COCH2OH in the solar-type protostar IRAS 16293-2422 B, using the Atacama Large Millimeter Array science verification data at Band 4. In a total of 11 unblended transitions of CH3COCH2OH with upper level energies ranging from 86 to 246 K are identified. From our local thermodynamic equilibrium analysis, we derived that the rotational temperature of CH3COCH2OH is 160 +/- 21 K and the column density is (1.2 +/- 1.0) x10(16)cm(-2), which results in a fractional abundance of 7x10(-10)with respect to molecular hydrogen. In this work, we present the identification of CH3COCH2OH in IRAS 16293-2422 B and propose a simple formation mechanism. The unambiguous identification of hydroxyacetone may provide the basis for future study of the origin and evolution of saccharides in the interstellar medium.
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资助项目	National Key R&D Program of China[2017YFA0402701] ; National Natural Science Foundation of China (NSFC)[U1631237] ; Chinese Academy of Sciences (CAS)[U1631237] ; Top Talents Program of Yunnan Province[2015HA030] ; NSFC[11973075]
WOS关键词	COMPLEX ORGANIC-MOLECULES ; INTERSTELLAR GLYCOLALDEHYDE ; SAGITTARIUS B2(N) ; COLOGNE DATABASE ; ETHYLENE-GLYCOL ; HIGH-RESOLUTION ; GALACTIC-CENTER ; HOT CORES ; MILLIMETER ; MICROWAVE
WOS研究方向	Astronomy & Astrophysics
语种	英语
CSCD记录号	CSCD:6781281
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000563436000001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Top Talents Program of Yunnan Province ; NSFC
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/3620]
专题	脉冲星研究团组
通讯作者	Qin, Sheng-Li
作者单位	1.Eastern Kentucky Univ, Dept Chem, Richmond, KY 40475 USA 2.Yunnan Univ, Dept Astron, Kunming 650091, Yunnan, Peoples R China 3.Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Yunnan, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yan,Quan, Dong-Hui,Zhang, Xia,et al. Detection of hydroxyacetone in protostar IRAS 16293-2422 B[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(8):125.
APA	Zhou, Yan,Quan, Dong-Hui,Zhang, Xia,&Qin, Sheng-Li.(2020).Detection of hydroxyacetone in protostar IRAS 16293-2422 B.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(8),125.
MLA	Zhou, Yan,et al."Detection of hydroxyacetone in protostar IRAS 16293-2422 B".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.8(2020):125.