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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
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号469期号:2页码:2286-2291
摘要We 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.
文章类型Article
关键词Gravitation Instabilities Turbulence Ism: Kinematics And Dynamics Galaxies: Star Formation
WOS标题词Science & Technology ; Physical Sciences
资助者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) ; 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
关键词[WOS]MOLECULAR CLOUDS ; SUPERSONIC TURBULENCE ; INITIAL CONDITIONS ; CLUSTER FORMATION ; GALACTIC PLANE ; COLUMN DENSITY ; ATLASGAL ; GRAVITY ; CORES ; GAS
收录类别SCI
语种英语
资助者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) ; 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研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000406629100077
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/20057
专题射电天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
2.Univ Observ Munich, Scheinerstr 1, D-81679 Munich, Germany
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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.
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