标题： 星团星系的亮度函数：M_1、M*与形态类型的相互关系 显示英文标题

标题： The luminosity function of cluster galaxies: relations among M_1, M* and the morphological type

摘要： 利用帕洛玛山1.2米施密特望远镜获得的照相底片，对36个阿贝尔星团的亮度函数进行了研究。 分析了最亮星团成员的星等M_1与Schechter函数参数M*之间的关系。 发现M*和M_1之间存在正相关关系。 然而，星团在M_1-M*平面上根据其Rood & Sastry分类呈现出分离现象，即从晚期到早期的Rood & Sastry以及Bautz & Morgan分类中，平均而言，M_1变亮而M*变暗。 此外，涉及第10亮星系的星等M_10的部分相关性分析显示，M_1和M*之间存在负的固有相关性。 这些结果与最亮星团成员形成的“吞噬”模型一致，并为星团形成和演化的理论提供了新的限制条件。 显示英文摘要

摘要： A study of the luminosity function of 36 Abell clusters of galaxies has been carried out using photographic plates obtained with the Palomar 1.2 m Schmidt telescope. The relation between the magnitude M_1 of the brightest cluster member and the Schechter function parameter M* has been analyzed. A positive correlation between M* and M_1 is found. However clusters appear segregated in the M_1-M* plane according to their Rood & Sastry class in such a way that on average M_1 becomes brighter while M* becomes fainter going from late to early Rood & Sastry and also Bautz & Morgan classes. Also a partial correlation analysis involving the magnitude M_10 of the 10th brightest galaxy, shows a negative intrinsic correlation between M_1 and M*. These results agree with the cannibalism model for the formation of brightest cluster members, and provide new constraints for theories of cluster formation and evolution.