The Local White Dwarf Population and the Vast New Domain of Massive Stellar Surveys

当地白矮星种群和大规模恒星巡天的广阔新领域

• 批准号: 1008845
• 负责人: Jay Holberg
• 金额: $ 41.05万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1008845&HistoricalAwards=false
• 关键词: Local; White; Dwarf; Population; Vast

This award will support a comprehensive program to study the white dwarf population in the vicinity of the Sun. White dwarfs represent the end stage of the evolution of low-mass stars like the Sun, and are found in considerable numbers in the local volume of space. This project will permit the determination of fundamental information on white dwarfs, in particular the space and mass density, the distribution of luminosities, the fraction of white dwarfs in binary systems, the relative distribution of white dwarf spectral types, and space motions and birth rates. A major focus of this project is to establish links between well-characterized studies of the local population and the vast numbers of suspected white dwarfs being discovered by large sky surveys in the next decade. Additionally, this project will allow continued upgrading of the Villanova Catalog of Spectroscopically Identified White Dwarfs, which now contains some 12,800 objects. This catalog has long served as the primary international reference for astronomers studying white dwarfs and it will be used extensively in this study of the local white dwarf population.The Villanova Catalog has been widely used in the astronomical community. All three groups involved in this proposal (the University of Arizona, Villanova University and the Florida Institute of Technology) will be active in education and public outreach, and will continue to involve undergraduates in the research project.

该奖项将支持一项全面的计划，以研究太阳附近的白矮人人口。 白矮人代表了像太阳这样的低质量恒星演变的末端阶段，在局部空间体积中发现了相当数量。 该项目将允许确定有关白色矮人的基本信息，尤其是空间和质量密度，亮度分布，二进制系统中白矮人的比例，白矮谱类型的相对分布以及太空运动和出生率。该项目的主要重点是建立对当地人口的良好特征研究与大量可疑的白矮人之间的联系，而在接下来的十年中，大型天空调查发现了大量的白矮人。此外，该项目将继续升级光谱识别的白色矮人的Villanova目录，现在包含大约12,800个物体。长期以来，该目录一直是研究白矮人的天文学家的主要国际参考，它将广泛用于本地白矮人人口的研究中。维拉诺瓦目录已在天文学群落中广泛使用。 参与该提案的所有三个小组（亚利桑那大学，维拉诺瓦大学和佛罗里达理工学院）将积极从事教育和公共宣传活动，并将继续参与研究项目的本科生。