球状星团M10（NGC6254）的自行研究

A PROPER MOTION STUDY OF THE GLOBULAR CLUSTER M10 (NGC 6254)

利用上海天文台和Bonn大学天文台的照相底片资料及大视场CCD观测数据，测定了球状星团M10（NGC6254）天文台中532颗恒星相对于依巴谷参考系和ACT星表的绝地自行，相对于Hipparcos参考星和ACT参考星分别得到的测定结果符合得很好，根据自行测定结果进行了星团成员判定，有两颗星族II父变星被证实为星团的成员，根据星团的绝对自行，结合其距离与视向速度观测结果，得了了M10的空间运动轨道。

Absolute proper motions of about 532 stars in the field of the globular cluster M10 (NGC 6254) were determined with respect to Hipparcos and ACT reference stars. In addition to photographic plates of Bonn and Shanghai also wide field CCD observations as second epoch plates were used. A good coincidence of the solutions based on reference stars from Hipparcos and from ACT was found. Our final proper motions allow a sufficient separation of cluster and field stars. Two population II cepheids were confirmed to be members of M10.The absolute proper motion of M10 was determined. The space motion and orbit of M10 indicates a thick disk orbit for the cluster. In combination with the large age of M10 this object sets an interesting constraint for the formation of the Milky Way.