Studies of Globular Cluster Cusps, Mass Functions, and Binary Star Frequencies

罗格斯大学的卡尔顿·普赖尔博士和西奥多威廉姆斯博士将 进行了一系列观测，以研究球状体中的过程 星团 它们将决定恒星的质量函数 以及特定星团中双星的出现频率 用于与更平均的群集群体进行比较。 质量 将通过测量质光比来研究功能， 双星将通过对变星的巡天发现， 径向速度 球状星团中的恒星代表了我们最好的样本之一 我们银河系早期恒星的起源 我们研究它们 更好地了解更遥远的古老恒星群， 它们是我们了解火星形成过程中的一些线索 银河 球状星团也是一个极好的实验室， 研究恒星动力学 地球上的重大动态演变 集群已经发生。 本研究将探讨三个 关于球状星团的问题 什么是频率和 原始双星的空间分布 有动力 进化修改了低浓度团簇的质量函数？ 如何常见的是急剧增加的速度分散在 星团的尖端

Drs. Carlton Pryor and Theodore Williams at Rutgers University will carry out a set of observations to study processes in globular clusters of stars. They will determine the mass functions of stars and the frequency of binary stars in specifically chosen clusters for comparison to a more average population of clusters. The mass functions will be studied by measuring mass-to-light ratios, and binaries will be discovered through surveys for stars with variable radial velocities. The stars in globular clusters represent one of our best samples of the early generations of stars in our Galaxy. We study them to better understand more distant old stellar populations and because they are among our few clues to conditions during the formation of the Galaxy. Globular clusters are also an excellent laboratory for studying stellar dynamics. Significant dynamical evolution in the cluster has already taken place. This research will address three questions about globular clusters. What is the frequency and spatial distribution of primordial binary stars? Has dynamical evolution modified the mass function in low-concentration clusters? How common are steep increases of the velocity dispersion in the cusps of clusters?