摘要
本文在Vasilevskis[1]确定疏散星团自行成员的数学模型基础上，引入场星分布相关系数，并考虑了自行不等精度情况，提出了一个按最大似然原理确定疏散星团自行成员的改进方法，并与Vasilevskis模型的计算结果进行了比较。最后给出了一个对不等精度自行求星团分布参数的例子。
By using Vasilevskis' mathematical model and adding the correlation coefficient of the field star distribution, an improved method on the basis of the maximum-likelihood principle is developed for membership determination of open clusters with proper motions with different errors. Distribution parameters are calculated directly by computing the maximum value of the likelihood function. As an ex-amplc, thc membership dctermination of Praesepe is presented and used to test the reasonability of the method.
出处
《中国科学院上海天文台年刊》
1994年第15期85-91,共7页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
基金
国家自然科学基金!1870614
