Discussions of the internal motions and mass segregation of M67 on the basis of accurate proper motions

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	Discussions of the internal motions and mass segregation of M67 on the basis of accurate proper motions
	Zhao, JL; Tian, KP; Su, CG
刊名	ASTROPHYSICS AND SPACE SCIENCE
	1996
卷号	235 期号:1 页码:93-108
ISSN号	0004-640X
英文摘要	The radius and virial mass of the old open cluster M67 are presented. The internal motion and mass segregation of the cluster are also discussed on the basis of accurate stellar proper motions obtained combining three independent proper motion catalogues of the cluster. Increases of the mean proper motion and the intrinsic dispersion of member stars with radial distance from the cluster center might suggest that the stars are escaping from the cluster. The stars in both inner and outer regions appear to be in isotropic orbits. At last, it is found that both space and velocity mass segregations exist for the old open cluster due to the dynamical evolution.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	KLUWER ACADEMIC PUBL
WOS记录号	WOS:A1996UG56200009
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32409]
专题	中国科学院上海天文台
通讯作者	Zhao, JL
推荐引用方式 GB/T 7714	Zhao, JL,Tian, KP,Su, CG. Discussions of the internal motions and mass segregation of M67 on the basis of accurate proper motions[J]. ASTROPHYSICS AND SPACE SCIENCE,1996,235(1):93-108.
APA	Zhao, JL,Tian, KP,&Su, CG.(1996).Discussions of the internal motions and mass segregation of M67 on the basis of accurate proper motions.ASTROPHYSICS AND SPACE SCIENCE,235(1),93-108.
MLA	Zhao, JL,et al."Discussions of the internal motions and mass segregation of M67 on the basis of accurate proper motions".ASTROPHYSICS AND SPACE SCIENCE 235.1(1996):93-108.