Collaborative Research: Galaxy Growth in Different Environments in the Early Universe from z=1.9 to 3.5

合作研究：早期宇宙不同环境下的星系生长（从z=1.9到3.5）

• 批准号: 1614798
• 负责人: Shardha Jogee
• 金额: $ 36.78万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1614798&HistoricalAwards=false
• 关键词: Collaborative; Research; Galaxy; Growth; Different

The team will assemble optical and infrared observations of hundreds of thousands of galaxies. The observations pick out galaxies about 10 to 12 billion years back in time. This period is known to be one of hectic change for galaxies. The team will study how these changes depend on whether a galaxy has many neighbors, or no neighbors at all. This important topic could not be studied before because not enough observations were available. The team will release their assembled catalog to the public. Senior team members will train junior members. The team will give public talks, offer residential workshops to teachers and develop a three-dimensional show for a children's science museum.In a tour de force, the team will combine data from five deep, wide-area galaxy surveys that include both photometry and integral-field-unit spectroscopy. They will use the combined data to study galaxy evolution over the full range of galactic environments at redshifts z ~ 1.9 to 3.5. These are key redshifts for galaxy evolution, as they probe the assembly of massive galaxies, the peaks in star formation and black-hole accretion, and the collapse of the largest proto-clusters of galaxies. The team will amass photometry for about 600,000 galaxies and spectroscopy for about 260,000 galaxies. Using this dataset, the team will conduct statistically meaningful analyses that were heretofore impossible.

该团队将收集数十万个星系的光学和红外观测结果。 这些观测挑选出了大约100亿到120亿年前的星系。 这一时期是已知的一个繁忙的变化星系。 该团队将研究这些变化如何取决于星系是否有许多邻居，或者根本没有邻居。 这一重要课题以前无法研究，因为没有足够的观测资料。 该团队将向公众发布他们的汇编目录。 资深团队成员将培训初级成员。 该团队将进行公开演讲，为教师提供住宿研讨会，并为儿童科学博物馆开发一个三维展览。在一次巡回演出中，该团队将联合收割机从五个深度，广域星系调查中获得的数据，包括测光和积分场单位光谱学。 他们将使用合并后的数据来研究星系在红移z ~ 1.9到3.5的整个星系环境中的演化。 这些是星系演化的关键红移，因为它们探测了大质量星系的集合，星星形成和黑洞吸积的高峰，以及最大的原星系团的崩溃。 该团队将为大约60万个星系收集测光数据，并为大约26万个星系收集光谱数据。 使用这个数据集，该团队将进行统计上有意义的分析，这是迄今为止不可能的。