Collaborative Research: Massive Surveys for Pulsars and Radio Transients Using the Arecibo L-band Feed Array

亚利桑那大学局部简并星群：校准广阔的新领域摘要：将进行一个全面研究局部白矮星群的项目，以解决有关单个白矮星的银河系起源（薄盘、厚盘或光晕）以及这些恒星的光谱亚群的基本问题。这项研究还将提供白矮星的热演化和化学演化的重要细节，并将本地白矮星种群与更大的更远的样本（如斯隆数字巡天中的白矮星种群）联系起来。这项研究的人口是在维拉诺瓦光谱识别白矮星目录中列出的2000到2500颗白矮星。这些目标是通过使用最新可用的光度，光谱和固有运动数据来增强现有的主要是本地白矮星的数据来实现的。该提案的一个基本方面是维护和升级现有的维拉诺瓦光谱识别白矮星目录和（亚利桑那州）白矮星数据库，其中所有这些数据集都将驻留。最后，将进行一个适度的观测计划，以加深和扩展已知白矮星的现有光谱和光度数据，这将填补关键空白，并验证目录和数据库中所有恒星的分类。数据库的内容（包括观测到的和通过这项工作得出的参数）将通过互联网公开，供多个学科（星系结构、形成、致密天体物理学等）的天文学家使用。多名本科生将参与亚利桑那理工学院和佛罗里达理工学院的工作。他们将参与数据库的设计、人口和分析，并将有机会体验大型数据集的科学研究。

AST 0507797Jay HolbergUniversity of ArizonaThe Local Degenerate Star Population: Calibrating a Vast New DomainABSTRACTA program to comprehensively study the local white dwarf population will be undertakento address fundamental questions concerning the Galactic origin (thin disk, thick disk or halo) ofboth individual white dwarfs as well as the spectroscopic subpopulations of these stars. Thisstudy will also provide important details on the thermal and chemical evolution of white dwarfsand link the local white dwarf population with larger more distant samples such as the white dwarfpopulation in the Sloan Digital Sky Survey. The population for this study is the 2000 to 2500 whitedwarfs listed in the Villanova Catalog of Spectroscopically Identified White Dwarf. These goals areachieved through the use of newly available photometric, spectroscopic and proper motion datato augment existing data on this population of predominantly local white dwarfs. A fundamentalaspect of this proposal is the maintenance and upgrading of the existing Villanova Catalog ofSpectroscopically Identified White Dwarfs and the (Arizona) White Dwarf Database, in which all these datasets will reside. Finally, a modest observing program will be conducted to deepen and expandthe existing spectroscopic and photometric data for known white dwarfs that will fill key gaps as wellas validate the classifications for all stars in the catalog and database.The database contents (both observed and parameters derived through this work) willbe made publicly available via the internet and used by astronomers across several disciplines(Galactic structure, formation, compact object physics, etc.). Multiple undergraduate students willbe involved with aspects of the work at both Arizona and Florida Tech. They will participatein the design of the database, its population, and analysis and will have the opportunity to experiencescientific research with large data sets.