Radial Population Trends in Early-Type Galaxies

早型星系的径向种群趋势

• 批准号: 0406443
• 负责人: James Rose
• 金额: --
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0406443&HistoricalAwards=false
• 关键词: Radial; Population; Trends; Early; Type

AST-0406443RoseThis project will carry out a comprehensive program to measure radial trends in the mean age and chemical composition of the stellar populations in early-type galaxies. These gradients, combined with previously determined ages and metallicities, will supply a fundamental observational database for the star formation histories of present-epoch early-type galaxies. This information can then be compared with rapidly developing numerical models for the evolution of galaxies, so that this program will have broad implications for the evolution of structure in the universeThe research team will be working intensively with early career undergraduate students during the summers, and the large database of stellar spectra will be widely distributed for use in population synthesis work. It should have a significant impact on the broader community, and serve a useful function as an educational tool.

AST-0406443ROSETHIS项目将执行一项综合计划，以衡量早期型星系中恒星种群平均年龄和化学成分的径向趋势。 这些梯度，结合了先前确定的年龄和金属性，将为当前 - 段 - 早期型星系的星形形成历史提供基本的观察数据库。 然后可以将这些信息与快速开发的星系演化的数值模型进行比较，以便该计划将对宇宙研究团队中结构的演变具有广泛的影响，在夏季，将与早期职业本科生进行密切合作，并且大型的现场数据库将广泛分布在人群综合工作中。 它应该对更广泛的社区产生重大影响，并作为一种教育工具有用。