Investigations of Star Clusters

卡德沃斯博士在耶基斯天文台的星星团研究 主要涉及自行的观测研究 和光度学研究的成员球状和开放 集群 星星团对于检验恒星理论是很重要的 星系演化和恒星动力学。 集群也 有助于各种类型的光度校准 恒星，以及银河系和 宇宙 在所有这些领域， 星团中的恒星是需要的，这是独立的理论， 恒星演化 自行的测量被用来 得出集群成员，研究内部动态的 集群，并得出集群的空间速度。 卡德沃斯医生 在这方面有着谨慎和准确的贡献， 基础天文学领域。

Dr. Cudworth's star cluster research at the Yerkes Observatory primarily involves observational investigations of proper motions and photometric studies of the members of globular and open clusters. Star clusters are important for testing theories of stellar evolution, galactic evolution, and stellar dynamics. Clusters also contribute to the luminosity calibration for a variety of types of stars, as well as the distance scale of the Galaxy and the Universe. In all of these areas a criterion for membership of stars in the cluster is needed which is independent of theories of stellar evolution. measurements of proper motions are used to derive cluster membership, study the internal dynamics of the clusters, and derive the cluster space velocities. Dr. Cudworth has a reputation for careful and accurate contributions in this area of fundamental astronomy.