Collaborative Research: Completion of the Southern Proper Motion Program

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博士将使用在阿根廷耶鲁南方天文台新安装的CCD摄像机来完成耶鲁/圣胡安南方固有运动（SPM）项目。SPM的前两个目录已经证明了在这个程序中可以实现的绝对正确运动的高质量。CCD系统将允许完成南部天空的第二历元观测，而且，将提供第一个完整的南部天空V和B的光度测量，直到V = 18.0和B = 19.0的星等限制。虽然前两个SPM目录是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相机系统和最近由美国海军天文台精密测量机完成的所有SPM板块的数字化，将使新版本的SPM目录能够完成到第一历元板块的极限星等。这一努力的科学回报将是巨大的！在此奖励期间，大约6000平方度，即剩余SPM油田的四分之三将被观察和分析。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，还使用特殊兴趣的子集；主要是最近完成的数以万计的金属贫乏（MP）和领域水平分支/主序A型（FRB/A）候选恒星列表，这些候选恒星是通过比尔斯和他的同事对香港调查板的数字扫描获得的，而拉姆堡/ESO调查的恒星组成部分产生的更大的有趣目标。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，因此具有直接的意义。这些信息将与已经掌握的径向速度相结合，或者将从计划中的大规模光谱跟踪中获得，以便在FAME和SIM太空任务获得适当的运动和距离测量之前很久，从其他调查中确定最有趣目标的完整空间运动

AST 0098508BeersIn 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.***