Absolute Proper Motions of the Magellanic Clouds and Milky Way Globular Clusters

麦哲伦云和银河系球状星团的绝对自行

• 批准号: 0407292
• 负责人: William Van Altena
• 金额: $ 25.5万
• 依托单位: Yale Southern Observatory, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-15 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407292&HistoricalAwards=false
• 关键词: Absolute; Proper; Motions; Magellanic; Clouds

Absolute Proper Motions of the Magellanic Clouds and Milky Way Globular ClustersABSTRACTAST 0407292 van AltenaDr. William van Altena, at the Yale Southern Observatory, Inc., will undertake a program to study the inner structure and gravitational potential of the Milky Way. From the three dimensional velocities of globular clusters, the PI plans to investigate the structure of the bulge region of the Galaxy, the structure and properties of the inner halo, the inner dark-matter density profile, properties of the accretion-assembled halo, and the correlation between the orbital distribution and the dynamical evolution of the globular-cluster system. Additionally the PI proposes a roughly 450-square-degree proper-motion study of the Large and Small Magellanic Clouds (LMC, SMC) and an Intercloud Bridge region. The program will result in a broader understanding of the formation of galaxies. The work has an international component, fostering interaction between Yale and the University of San Juan (Argentina). Student training, and in particular the inclusion of female astronomy majors at the University of San Juan, is also a component of the effort.

麦哲伦星云和银河系球状星团的绝对固有运动[j]。耶鲁南方天文台公司的William van Altena将承担一项研究银河系内部结构和引力势的计划。从球状星团的三维速度出发，PI计划研究银河系凸起区域的结构、内晕的结构和性质、内部暗物质密度分布、吸积聚集晕的性质以及轨道分布与球状星团系统动态演化之间的关系。此外，PI还提议对大小麦哲伦云（LMC， SMC）和云间桥区域进行大约450平方度的自运动研究。该计划将使人们对星系的形成有更广泛的了解。这项工作有一个国际组成部分，促进耶鲁大学和圣胡安大学（阿根廷）之间的互动。学生培训，特别是在圣胡安大学招收女性天文学专业学生，也是这项努力的一个组成部分。