PMO OpenIR  > 期刊(老文献)
SMA OBSERVATIONS OF C2H IN HIGH-MASS STAR-FORMING REGIONS
Jiang, Xue-Jian1,2,3,4,5; Liu, Hauyu Baobab6; Zhang, Qizhou3; Wang, Junzhi7; Zhang, Zhi-Yu8,9; Li, Juan7; Gao, Yu1,2; Gu, Qiusheng4,5
2015-08-01
Source PublicationASTROPHYSICAL JOURNAL
Volume808Issue:2Pages:1-9
AbstractC2H is a representative hydrocarbon that is abundant and ubiquitous in the interstellar medium. To study its chemical properties, we present Submillimeter Array observations of the C2H N = 3-2 and. HC3N J = 30-29 transitions. and the 1.1 mm continuum emission toward four OB cluster-forming regions, AFGL 490, ON 1, W33 Main, and G10.6-0.4, which cover a bolometric luminosity range of similar to 10(3)-10(6) L-circle dot. We found that on large scales, the C2H emission traces the dense molecular envelope. However, for all observed sources, the peaks of C2H emission are offset by several times. 104 AU from the peaks of 1.1 mm continuum emission, where the most luminous stars are located. By comparing the distribution and profiles of C2H hyperfine lines and the 1.1 mm continuum emission, we find that the C2H column density (and abundance) around the 1.1 mm continuum peaks is lower than those in the ambient gas envelope. Chemical models suggest that C2H might be transformed to other species owing to increased temperature and density;. thus, its reduced abundance could be the signpost of the heated molecular gas in the similar to 10(4) AU vicinity around the embedded high-mass stars. Our results support such theoretical prediction for centrally embedded similar to 10(3)-10(6) L-circle dot OB star-forming cores, while future higher-resolution observations are required to examine the C2H transformation around the localized sites of high-mass star formation.
KeywordAstrochemistry Ism: Abundances Molecular Processes Stars: Early-type Stars: Formation Stars: Individual (G10.6-0.4, On1, W33, And Afgl 490)
Subject Area天体物理学
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/808/2/114
WOS KeywordSPATIALLY-RESOLVED CHEMISTRY ; CARBON-CHAIN MOLECULES ; H-II REGIONS ; OB CLUSTERS ; INFRARED OBSERVATIONS ; INTERSTELLAR CLOUDS ; PHYSICAL STRUCTURE ; DENSITY STRUCTURE ; DUST CONTINUUM ; HII REGION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000371002400009
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15328
Collection期刊(老文献)
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 2 W Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 W Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
4.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China
5.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China
6.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan
7.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
8.Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
9.ESO, D-85748 Munich, Germany
Recommended Citation
GB/T 7714
Jiang, Xue-Jian,Liu, Hauyu Baobab,Zhang, Qizhou,et al. SMA OBSERVATIONS OF C2H IN HIGH-MASS STAR-FORMING REGIONS[J]. ASTROPHYSICAL JOURNAL,2015,808(2):1-9.
APA Jiang, Xue-Jian.,Liu, Hauyu Baobab.,Zhang, Qizhou.,Wang, Junzhi.,Zhang, Zhi-Yu.,...&Gu, Qiusheng.(2015).SMA OBSERVATIONS OF C2H IN HIGH-MASS STAR-FORMING REGIONS.ASTROPHYSICAL JOURNAL,808(2),1-9.
MLA Jiang, Xue-Jian,et al."SMA OBSERVATIONS OF C2H IN HIGH-MASS STAR-FORMING REGIONS".ASTROPHYSICAL JOURNAL 808.2(2015):1-9.
Files in This Item:
File Name/Size DocType Version Access License
2015283.pdf(1272KB)期刊论文作者接受稿开放获取Apache LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jiang, Xue-Jian]'s Articles
[Liu, Hauyu Baobab]'s Articles
[Zhang, Qizhou]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jiang, Xue-Jian]'s Articles
[Liu, Hauyu Baobab]'s Articles
[Zhang, Qizhou]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jiang, Xue-Jian]'s Articles
[Liu, Hauyu Baobab]'s Articles
[Zhang, Qizhou]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2015283.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.