Magellanic Cloud Clusters

麦哲伦星云中的星星团系统提供了一个 这两个星系历史的理想信息来源。 通过测量星团的年龄， 化学丰度，有可能重建的历史， 集群形成的速度，以及探讨这个问题， 化学浓缩。 霍奇博士将继续对关键星星团的观测工作 使用最先进的探测器 他将集中精力在三个 特殊问题：1）包含造父变星的星团; 2） 作为位置和团簇质量的函数的团簇寿命;以及 3)在星星形成区的凝聚体中非常年轻的星团。 这项工作的一个重要副产品是比较 观察与理论上的进化轨迹的年龄和 丰度是无法从人口稠密的集群， 我们的银河系 此外，测光观察允许测试 大麦哲伦星云的距离测定， 已经受到质疑

The system of star clusters in the Magellanic Clouds provides an ideal source of information on the history of these two galaxies. By measuring the ages of the clusters and by determining their chemical abundances, it is possible to reconstruct the history of the rate of cluster formation, as well as to explore the question of chemical enrichment. Dr. Hodge will continue observational work on key star clusters using state of the art detectors. He will concentrate on three special problems: 1) clusters containing Cepheid variables; 2) cluster lifetimes as a function of position and cluster mass; and 3) very young clusters as condensations in star forming regions. An important by product of this work is the comparison of observations with theoretical evolutionary tracks of ages and abundances that are not available from well populated clusters in our Galaxy. Furthermore, photometry observations allow a test of the distance determination of the Large Magellanic Cloud, which has been questioned.