Color Evolution of Distant Cluster Galaxies

遥远星系团的颜色演化

• 批准号: 0307508
• 负责人: James Schombert
• 金额: $ 5.74万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0307508&HistoricalAwards=false
• 关键词: Color; Evolution; Distant; Cluster; Galaxies

AST-0307508SchombertThis project is a narrow band, continuum color survey of the red and blue populations in distant clusters of galaxies, using a specially designed filter system to resolve age and metallicity effects and distinguish the mean star formation rates in the cluster blue population. This enables a two-pronged attack on the question of the color evolution of cluster galaxies. Following the passive evolution of the red population allows an estimate of the time of galaxy assembly, while isolating two blue components, by segregating a starburst contribution, will resolve their epoch of formation. Combined with existing emission line, kinematic, and morphological work, this research will provide a complete picture of galaxy evolution in clusters for the past eight billion years. Observational cosmology is a popular subfield of study at the undergraduate level, as well as providing a philosophical framework for society as a whole, and this work will contribute to its understanding.***

AST-0307508 Schombert该项目是对遥远星系团中的红色和蓝色星群进行窄带、连续彩色巡天，使用专门设计的滤光器系统来分辨年龄和金属丰度效应，并区分蓝色星群中的平均星星形成率。 这使得对星系团颜色演化问题的研究可以双管齐下。 根据红色星群的被动演化，可以估计星系聚集的时间，而通过分离星暴的贡献来分离两个蓝色成分，将解决它们的形成时期。 结合现有的发射线，运动学和形态学工作，这项研究将提供过去80亿年星系团演化的完整图像。 观测宇宙学是本科阶段研究的一个热门子领域，也为整个社会提供了一个哲学框架，这项工作将有助于理解它。