Collaborative Research: Completion of the Southern Proper Motion Program

合作研究：完成南方自行计划

• 批准号: 0098548
• 负责人: William Van Altena
• 金额: $ 31.23万
• 依托单位: Yale Southern Observatory, Inc.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098548&HistoricalAwards=false
• 关键词: Collaborative; Research; Completion; Southern; Proper

AST 0098548Van AltenaIn a collaborative research project, Dr. William Van Altena, of Yale Southern Observatory, and Dr. Timothy Beers, of Michigan State University, will use the newly installed CCD cameras at the Yale Southern Observatory in Argentina in order to complete the Yale/San-Juan Southern Proper Motion (SPM) program. The first two catalogs of the SPM have already demonstrated the high quality of the absolute proper motions that are attainable within this program. The CCD system will allow completion of the 2nd-epoch observations of the southern sky and, furthermore, will provide the first full southern-sky set of photometry in V and B, down to a magnitude limit of V = 18.0 and B = 19.0. While the first two SPM Catalogs were based on input lists of interesting objects as well as randomly selected stars for kinematic studies, the new CCD camera system, and recent completion of the digitization of all SPM plates by the Precision Measuring Machine of the U.S. Naval Observatory, will allow the new version of the SPM Catalog to be complete to the limiting magnitude of the 1st-epoch plates. The science return from this effort will be enormous! During this award period, about 6000 square degrees, or three-quarters of the remaining SPM fields should be observed and analyzed.The immediate motivation for the project is linked to exploration of the kinematics and dynamics of the Galaxy, using not only randomly selected anonymous stars but also subsets of special interest; primarily the recently completed lists of tens of thousands of metal-poor (MP) and field horizontal- branch/main-sequence A-type (FRB/A) candidate stars obtained from digital scans of the HK survey plates of Beers and colleagues, and the even larger set of interesting targets generated from the stellar component of the Ramburg/ESO Survey. These two surveys form the basis for present spectroscopic exploration of the nature of the early Galaxy and its chemical and dynamical evolution, and hence are of immediate interest. This information will be combined with radial velocities already in hand, or to be obtained from planned large-scale spectroscopic follow-up, in order to determine full space motions for the most interesting targets from the other surveys long before proper motions and distance measurements are obtained with the space missions FAME and SIM.***

AST 0098548Van Altena 在一个合作研究项目中，耶鲁南方天文台的 William Van Altena 博士和密歇根州立大学的 Timothy Beers 博士将使用阿根廷耶鲁南方天文台新安装的 CCD 相机来完成耶鲁/圣胡安南方自行运动 (SPM) 计划。 SPM 的前两个目录已经展示了该程序中可实现的绝对自行的高质量。 CCD 系统将能够完成对南方天空的第二纪元观测，此外，还将提供第一组完整的南方天空 V 和 B 光度测量，低至 V = 18.0 和 B = 19.0 的星等限制。虽然前两个 SPM 目录基于有趣天体的输入列表以及随机选择的恒星进行运动学研究，但新的 CCD 相机系统以及美国海军天文台精密测量机最近完成的所有 SPM 板的数字化将使新版本的 SPM 目录完整到第一纪元板的极限星等。这项努力的科学回报将是巨大的！在此奖励期间，应观测和分析约 6000 平方度，即剩余 SPM 场的四分之三。该项目的直接动机与探索银河系的运动学和动力学有关，不仅使用随机选择的匿名恒星，还使用特别感兴趣的子集；主要是最近完成的数万颗贫金属（MP）和场水平分支/主序 A 型（FRB/A）候选恒星的列表，这些候选恒星是通过对 Beers 及其同事的 HK 巡天盘进行数字扫描而获得的，以及从 Ramburg/ESO 巡天的恒星部分生成的更大规模的有趣目标。 这两项调查构成了目前对早期星系性质及其化学和动力学演化的光谱探索的基础，因此具有直接意义。这些信息将与现有的径向速度相结合，或者从计划的大规模光谱跟踪中获得，以便在通过空间任务 FAME 和 SIM 获得自行运动和距离测量之前很久就确定来自其他勘测的最有趣目标的全空间运动。***