NAOC Open IR  > 射电天文研究部
Mass-size scaling M similar to r(1.67) of massive star-forming clumps - evidences of turbulence-regulated gravitational collapse
Zhang, Chuan-Peng1; Li, Guang-Xing2
2017-08-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume469Issue:2Pages:2286-2291
AbstractWe study the fragmentation of eight massive clumps using data from ATLASGAL 870 mu m, SCUBA 850 and 450 mu m, PdBI 1.3 and 3.5 mm, and probe the fragmentation from 1 to 0.01 pc scale. We find that the masses and the sizes of our objects follow M similar to r(1.68 +/- 0.05). The results are in agreements with the predictions of Li where M similar to r(5/3). Inside each object, the densest structures seem to be centrally condensed, with rho(r) similar to r(-2). Our observational results support a scenario where molecular gas in the Milky Way is supported by a turbulence characterized by a constant energy dissipation rate, and gas fragments like clumps and cores are structures which are massive enough to be dynamically detached from the ambient medium.
SubtypeArticle
KeywordGravitation Instabilities Turbulence Ism: Kinematics And Dynamics Galaxies: Star Formation
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Key Basic Research Program of China (973 Program)(2015CB857100) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Natural Science Foundation of China(11363004 ; National Natural Science Foundation of China(11363004 ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Canada Foundation for Innovation ; Canada Foundation for Innovation ; 11403042) ; 11403042) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Natural Science Foundation of China(11363004 ; National Natural Science Foundation of China(11363004 ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Canada Foundation for Innovation ; Canada Foundation for Innovation ; 11403042) ; 11403042)
DOI10.1093/mnras/stx954
WOS KeywordMOLECULAR CLOUDS ; SUPERSONIC TURBULENCE ; INITIAL CONDITIONS ; CLUSTER FORMATION ; GALACTIC PLANE ; COLUMN DENSITY ; ATLASGAL ; GRAVITY ; CORES ; GAS
Indexed BySCI
Language英语
Funding OrganizationNational Key Basic Research Program of China (973 Program)(2015CB857100) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Natural Science Foundation of China(11363004 ; National Natural Science Foundation of China(11363004 ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Canada Foundation for Innovation ; Canada Foundation for Innovation ; 11403042) ; 11403042) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Key Basic Research Program of China (973 Program)(2015CB857100) ; National Natural Science Foundation of China(11363004 ; National Natural Science Foundation of China(11363004 ; National Astronomical Observatories, Chinese Academy of Sciences ; National Astronomical Observatories, Chinese Academy of Sciences ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Deutsche Forschungsgemeinschaft (DFG)(1573 ISM-SPP) ; Canada Foundation for Innovation ; Canada Foundation for Innovation ; 11403042) ; 11403042)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000406629100077
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20057
Collection射电天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
2.Univ Observ Munich, Scheinerstr 1, D-81679 Munich, Germany
Recommended Citation
GB/T 7714
Zhang, Chuan-Peng,Li, Guang-Xing. Mass-size scaling M similar to r(1.67) of massive star-forming clumps - evidences of turbulence-regulated gravitational collapse[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,469(2):2286-2291.
APA Zhang, Chuan-Peng,&Li, Guang-Xing.(2017).Mass-size scaling M similar to r(1.67) of massive star-forming clumps - evidences of turbulence-regulated gravitational collapse.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,469(2),2286-2291.
MLA Zhang, Chuan-Peng,et al."Mass-size scaling M similar to r(1.67) of massive star-forming clumps - evidences of turbulence-regulated gravitational collapse".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 469.2(2017):2286-2291.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Chuan-Peng]'s Articles
[Li, Guang-Xing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Chuan-Peng]'s Articles
[Li, Guang-Xing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Chuan-Peng]'s Articles
[Li, Guang-Xing]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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