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Chemical Diagnostics of the Massive Star Cluster- forming Cloud G33.92+0.11. II. HDCS and DCN
Minh, Young Chol1; Liu, Hauyu Baobab2; Galvan-Madrid, Roberto3; Sahu, Dipen4; He JH(何金华)5,6,7; Hasegawa, Tatsuhiko2
通讯作者Minh, Young Chol()
发表期刊ASTROPHYSICAL JOURNAL
2018-09-10
卷号864期号:2页码:7
DOI10.3847/1538-4357/aad909
产权排序第5完成单位
收录类别SCI
关键词ISM: abundances ISM: individual (G33.92+0.11) ISM: molecules radio lines: ISM
摘要The central region of the massive star-forming cloud G33.92+0.11 was investigated with the emission from the deuterated species HDCS and DCN observed at sub-arcsecond angular resolution (similar to 0."7) using ALMA. HDCS shows a distributed emission throughout the region, and its large relative abundance in the most recent star-forming region suggests that there still exists a significant amount of cold gas associated with the hot core region. A high degree of HDCS fractionation (HDCS/H2CS > 0.1) was found in the north region between star-forming clumps where the cold dense pre-collapse gas may still exist. DCN appears to have a good correlation with the continuum emission. This species traces both cold and warm dense gas probably by typical cold deuterium fractionation reactions and also by the lukewarm fractionation reactions. Near the densest cores where massive stars have already formed and dust mantles are evaporating, the DCN/HDCS abundance ratio was found to be larger by a factor of a few than other positions. This may suggest that the DCN abundance has been increased through the lukewarm fractionation processes in the gas phase.
资助项目National Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; Chinese Academy of Sciences (CAS)
项目资助者National Natural Science Foundation of China ; Yunnan Province of China ; Chinese Academy of Sciences (CAS)
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
ISSN0004-637X
URL查看原文
WOS记录号WOS:000443836000002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DEUTERIUM FRACTIONATION ; INTERSTELLAR-MEDIUM ; DEUTERATED MOLECULES ; SULFUR CHEMISTRY ; PRESTELLAR CORES ; CO DEPLETION ; ABUNDANCES ; ENVIRONMENTS ; EVOLUTION ; REGIONS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17899
专题大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
通讯作者Minh, Young Chol
作者单位1.Korea Astronomy and Space Science Institute, 776 Daedeok-daero, Yuseong, Daejeon 34055, Republic of Korea
2.Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan
3.Centro de Radioastronomía y Astrofísica, UNAM, A.P. 3-72, Xangari, Morelia 58089, Mexico
4.Physical Research laboratory, Navrangpura, Ahmedabad, Gujarat 380009, India
5.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China
6.Chinese Academy of Sciences South America Center for Astronomy, China-Chile Joint Center for Astronomy, Camino El Observatorio #1515, Las Condes, Santiago, Chile
7.Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
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Minh, Young Chol,Liu, Hauyu Baobab,Galvan-Madrid, Roberto,et al. Chemical Diagnostics of the Massive Star Cluster- forming Cloud G33.92+0.11. II. HDCS and DCN[J]. ASTROPHYSICAL JOURNAL,2018,864(2):7.
APA Minh, Young Chol,Liu, Hauyu Baobab,Galvan-Madrid, Roberto,Sahu, Dipen,He JH,&Hasegawa, Tatsuhiko.(2018).Chemical Diagnostics of the Massive Star Cluster- forming Cloud G33.92+0.11. II. HDCS and DCN.ASTROPHYSICAL JOURNAL,864(2),7.
MLA Minh, Young Chol,et al."Chemical Diagnostics of the Massive Star Cluster- forming Cloud G33.92+0.11. II. HDCS and DCN".ASTROPHYSICAL JOURNAL 864.2(2018):7.
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