Building the Giants: Cluster Formation and Galaxy Evolution over the Last 12 Billion years

当我们望向太空时，我们也看到了时间。这个项目将使用遥远星系的调查数据来识别早期宇宙中的年轻星系团。他们将把这些早期星系团的性质与后来宇宙中邻近星系团的性质进行比较。这些星系团的目录将与星系团成长的理论建模相结合，以便将早期的星系团与它们在宇宙时间中的后代联系起来，并绘制星系团形成及其对星系演化的影响。该项目还将支持天文学研究本科生的指导。该项目将使用来自VIMOS超深探测的现有数据来识别高密度高红移（2z5）星系中的原星系团。低红移星团（z ~ 1）将利用红移演化观测的数据进行识别。在这两项调查中，群集将使用新的蒙特卡罗方法来识别Voronoi镶嵌技术。利用DIEMOS对五个VUDS原星系团进行有限的星等调查将增加光谱识别成员星系的数量。千禧年运行的理论模型将把ORELSE调查的高红移原星团与低红移星团联系起来。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

As we look out in space, we see back in time as well. This project will use survey data of distant galaxies to identify young galaxy clusters in the early universe. They will compare the properties of these early clusters with the properties of nearby galaxy clusters in the later universe. These to catalogs of clusters will be combined with theoretical modeling of the growth of galaxy clusters in order to link early clusters to their descendant across cosmic time and to chart cluster formation and its effect on galaxy evolution. This project will also support the mentoring of undergraduates in astronomy research.The project will use existing data from the VIMOS Ultra-Deep Survey to identify protoclusters in overdensities of high-redshift (2 z 5) galaxies. Low redshift clusters (z ~ 1) will be identified using data from the Observations of Redshift Evolution Survey. In both surveys, clusters will be identified using a novel Monte Carlo approach to Voronoi Tessellation techniques. A magnitude-limited survey of five VUDS protoclusters using DIEMOS will increase the number of spectroscopically identified member galaxies. Theoretical modeling from the Millennium Run will connect the high-redshift protoclusters with the low-redshift clusters of the ORELSE survey.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.