【摘要】 本文用疏散星团M67区域内1067颗恒星的相对自行值,按最大似然原理求得每颗星的成员概率,并由此确定了375颗为成员星,这375颗星的成员概率大于0.65。按照判别分析原理所确定的成员星数为412颗。更多还原

【Abstract】 Using the relative proper motions of 1067 stars in the region of the open cluster M67, 375 cluster member stars are found by means of the maximum-likelyhood principle, (from the 1067 stars) membership probabilities of which are calculated. The membership probabilities of all the 1067 member stars obtained based upon the discriminatory analysis principle is 412. In addition, comparison with Sanders’ result about determination of membership of M67 has been made to some extent.更多还原