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The Fundamental Plane of Open Clusters

文献类型：期刊论文

作者Pang, Xiaoying1,2; Shen, Shiyin2,3; Shao, Zhengyi2,3
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2018-11-20
卷号868期号:1
关键词Open Clusters And Associations: General Stars: Kinematics And Dynamics
ISSN号2041-8205
DOI10.3847/2041-8213/aaedaa
英文摘要We utilize the data from the Apache Point Observatory Galactic Evolution Experiment-2 in the fourteenth data release of the Sloan Digital Sky Survey to calculate the line-of-sight velocity dispersion a m of a sample of old open clusters (aged older than 100 Myr) selected from the Milky Way open cluster catalog of Kharchenko et al. Together with their K-s band luminosity L-Ks , and the half-light radius r(h) of the most probable members, we find that these three parameters show significant pairwise correlations among each other. Moreover, a fundamental plane- like relation among these parameters is found for the oldest open clusters (aged older than 1 Gyr), L-Ks proportional to sigma(0.8)(2 +/-)(0.)(29)(1D) . r(h)(2.19 +/- 0.)(52) with rms similar to 0.31 mag in the Ks band absolute magnitude. The existence of this relation, which deviates significantly from the virial theorem prediction, implies that the dynamical structures of the old open clusters are quite similar, when survived from complex dynamical evolution to age older than 1 Gyr.
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000450312400002
出版者IOP PUBLISHING LTD
源URL[http://119.78.226.72/handle/331011/32193]  
专题中国科学院上海天文台
通讯作者Pang, Xiaoying
作者单位1.Shanghai Inst Technol, 100 Haiquan Rd, Shanghai 201418, Peoples R China
2.Shanghai Astron Observ, 80 Nandan Rd, Shanghai, Peoples R China
3.Shanghai Normal Univ, Key Lab Astrophys, 100 Guilin Rd, Shanghai 200234, Peoples R China
推荐引用方式
GB/T 7714		 Pang, Xiaoying,Shen, Shiyin,Shao, Zhengyi. The Fundamental Plane of Open Clusters[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,868(1).
APA Pang, Xiaoying,Shen, Shiyin,&Shao, Zhengyi.(2018).The Fundamental Plane of Open Clusters.ASTROPHYSICAL JOURNAL LETTERS,868(1).
MLA Pang, Xiaoying,et al."The Fundamental Plane of Open Clusters".ASTROPHYSICAL JOURNAL LETTERS 868.1(2018).

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来源：上海天文台

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