PMO OpenIR  > 分子云与恒星形成研究团组
Molecular gas and star formation in Lynds 870
Mao, RQ; Yang, J; Henkel, C; Jiang, ZB
2002-07-01
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume389Issue:2Pages:589-602
AbstractWe present molecular line and submillimeter dust continuum observations of the Lynds 870 cloud in the vicinity of IRAS 20231+3440. Two submillimeter cores, SMM1 and SMM2, are identified mapping the 870 mum dust continuum and ammonia (NH3) emission. The total molecular mass is similar to70-110 M-.. The northern core is warmer and denser than the southern one. Molecular outflows are discovered in both cores. In the northern one a significant amount of low velocity (1.3-2.8 km s(-1)) out owing gas is found, that is hidden in the relatively broad CO lines but that is revealed by the narrower HCO+ spectra. While IRAS 20231+3440 is most likely the exciting star of the northern outflow, the driving source of the southern outflow is not detected by infrared surveys and must be deeply embedded in the cloud core. Large scale (similar to 0.2 pc) infall motion is indicated by blue asymmetric profiles observed in the HCO+ J = 3-2 spectra. Red K-s band YSO candidates revealed by the 2MASS survey indicate ongoing star formation throughout the cloud. The calculated masses and the measured degree of turbulence are also reminiscent of clouds forming groups of stars. The excitation of the molecular lines, molecular abundances, and outflow properties are discussed. It is concluded that IRAS 20231+3440 is a Class I object, while the southern core most likely contains a Class 0 source.
KeywordIsm : Jets And Outflows Ism : Molecules Stars : Formation Ism : Individual : Lynds 870, Iras 20231+3440
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1051/0004-6361:20020621
WOS KeywordYOUNG STELLAR OBJECTS ; EMISSION-LINE SPECTRUM ; LOW-MASS ; DENSE CORES ; CONTINUUM OBSERVATIONS ; PROTOSTELLAR COLLAPSE ; INTERSTELLAR AMMONIA ; BIPOLAR FLOWS ; IRAS SOURCES ; CLOUDS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000176817200030
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7801
Collection分子云与恒星形成研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Max Planck Inst Radioastron, D-53121 Bonn, Germany
4.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan
Recommended Citation
GB/T 7714
Mao, RQ,Yang, J,Henkel, C,et al. Molecular gas and star formation in Lynds 870[J]. ASTRONOMY & ASTROPHYSICS,2002,389(2):589-602.
APA Mao, RQ,Yang, J,Henkel, C,&Jiang, ZB.(2002).Molecular gas and star formation in Lynds 870.ASTRONOMY & ASTROPHYSICS,389(2),589-602.
MLA Mao, RQ,et al."Molecular gas and star formation in Lynds 870".ASTRONOMY & ASTROPHYSICS 389.2(2002):589-602.
Files in This Item:
File Name/Size DocType Version Access License
2002043Molecular gas(699KB) 开放获取LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Mao, RQ]'s Articles
[Yang, J]'s Articles
[Henkel, C]'s Articles
Baidu academic
Similar articles in Baidu academic
[Mao, RQ]'s Articles
[Yang, J]'s Articles
[Henkel, C]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Mao, RQ]'s Articles
[Yang, J]'s Articles
[Henkel, C]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2002043Molecular gas and star formation in Lynds 870.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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