Chemistry and Kinematics of the Galaxy and the Large Magellanic Cloud: A Joint Project Between the University ofNorth Carolina and Bowling Green State University

银河系和大麦哲伦星云的化学和运动学：北卡罗来纳大学和鲍灵格林州立大学之间的联合项目

• 批准号: 8920563
• 负责人: John Laird
• 金额: $ 7.5万
• 依托单位: Bowling Green State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-03-15 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8920563&HistoricalAwards=false
• 关键词: Chemistry; Kinematics; Galaxy; Large; Magellanic

Dr. Laird will collaborate on this joint project with Dr. Bruce Carney at the University of North Carolina to begin four new observational programs which are dedicated to studies of the disk and outer halo of our Galaxy and to the Large Magellanic Cloud. (1) Several thousand dwarf stars will be identified in selected directions in the Galactic plane to determine the local density ratio of thin disk and thick disk populations of stars. (2) The outer disk of our Galaxy will be studied for information relevant to the formation timescale of the disk and for chemical and kinematic information about the outer disk. (3) The metallicities of red giant stars in globular clusters in the outer halo of our Galaxy and of dwarf spheroidal galaxies will be determined. (4) Metallicities and radial velocities of about 1000 giant stars in the Large Magellanic Cloud will be determined. This will reveal the history of the chemistry and kinematics of the older stars in the Large Magellanic Cloud. These principal investigators will also compute synthetic spectra for cooler stars and lower gravity stars in order to derive the mean matallicities from high resolution spectra obtained from observations.

Laird博士将与布鲁斯博士合作开展这一联合项目 卡尼在北卡罗来纳州大学开始四个新的 专门研究磁盘的观测程序 和我们银河系的外晕以及大麦哲伦星云。 (1)数千颗矮星将在选定的 在银河平面的方向，以确定当地的密度 恒星薄盘和厚盘的比例。 (2)的 我们将研究银河系的外盘以获取相关信息 磁盘的形成时间尺度和化学和 外盘的运动学信息。 (3)金属含量 我们的外晕中的球状星团中的红巨星 银河系和矮球状星系将被确定。 （四） 年约1000颗巨星的金属丰度和视向速度 大麦哲伦星云将被确定。 这将揭示 宇宙中较老恒星的化学和运动学的历史 大麦哲伦星云 这些主要调查人员将 我还计算较冷恒星和较低重力的合成光谱 恒星，以获得平均金属丰度从高 从观测中获得的分辨率光谱。