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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
Source PublicationASTROPHYSICAL JOURNAL
2018-09-10
Volume864Issue:2Pages:7
DOI10.3847/1538-4357/aad909
Contribution Rank第5完成单位
Indexed BySCI
KeywordISM: abundances ISM: individual (G33.92+0.11) ISM: molecules radio lines: ISM
Abstract

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.

Funding ProjectNational Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; Chinese Academy of Sciences (CAS)
Funding OrganizationNational Natural Science Foundation of China[U1631237] ; Yunnan Province of China[2017HC018] ; Chinese Academy of Sciences (CAS)
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000443836000002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDEUTERIUM FRACTIONATION ; INTERSTELLAR-MEDIUM ; DEUTERATED MOLECULES ; SULFUR CHEMISTRY ; PRESTELLAR CORES ; CO DEPLETION ; ABUNDANCES ; ENVIRONMENTS ; EVOLUTION ; REGIONS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17899
Collection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
Corresponding AuthorMinh, Young Chol
Affiliation1.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
Recommended Citation
GB/T 7714
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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