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.

该团队将对数十万个星系进行光学和红外观测。 这些观测发现了大约 10 至 120 亿年前的星系。 众所周知，这一时期是星系剧烈变化的时期之一。 研究小组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。 这个重要的话题以前无法研究，因为没有足够的观察结果。 该团队将向公众发布他们组装的目录。 高级团队成员将对初级成员进行培训。 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三维展示。在一项杰作中，该团队将结合来自五次深度、广域星系调查的数据，其中包括光度测量和积分场单元光谱学。 他们将利用综合数据来研究红移 z ~ 1.9 至 3.5 范围内整个星系环境中的星系演化。 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聚集、恒星形成和黑洞吸积的峰值，以及最大原星系团的崩溃。 该团队将收集约 600,000 个星系的光度测量数据和约 260,000 个星系的光谱数据。 使用该数据集，该团队将进行统计上有意义的分析，而这在以前是不可能的。