Mass-size scaling M similar to r(1.67) of massive star-forming clumps - evidences of turbulence-regulated gravitational collapse
文献类型：期刊论文
| 作者 | Li, Guang-Xing1; Zhang, Chuan-Peng2
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 469期号:2页码:2286-2291 |
| 关键词 | Gravitation Instabilities Turbulence Ism: Kinematics And Dynamics Galaxies: Star Formation |
| DOI | 10.1093/mnras/stx954 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| WOS关键词 | MOLECULAR CLOUDS ; SUPERSONIC TURBULENCE ; INITIAL CONDITIONS ; CLUSTER FORMATION ; GALACTIC PLANE ; COLUMN DENSITY ; ATLASGAL ; GRAVITY ; CORES ; GAS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000406629100077 |
| 资助机构 | 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) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/20057]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Univ Observ Munich, Scheinerstr 1, D-81679 Munich, Germany 2.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Guang-Xing,Zhang, Chuan-Peng. 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 | Li, Guang-Xing,&Zhang, Chuan-Peng.(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 | Li, Guang-Xing,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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