The Evolution of Galaxy Clusters and their Galaxies

分析钱德拉对遥远星系团的15次观测，主要是确定这些星系团中活动星系核的污染程度。这项工作将审查最遥远的候选星系团，并将检测任何贡献超过总XXL通量25%的活动星系核。我还将净化安全星团，目前认为这些星团包含一些活动星系核，并部分受到活动星系核辐射的污染。由此，我们将能够建立一个样本的z>1集群与已知的活动星系核污染，这将是非常重要的未来的研究。最后，我们将提高我们对遥远星系团的选择功能的理解。

To analyse 15 Chandra observations of distant galaxy clusters, principally to determine the extent of AGN contamination in these clusters. This work will vet the most distant cluster candidates and will detect any AGN contributing >25% of the total XXL flux. I will also decontaminate secure clusters, which are currently believed to contain some AGN and be partially contaminated by AGN emission. From this we will be able to build up a sample of z>1 clusters with known AGN contamination which will be very important for future studies. Finally, we will improve our understanding of the selection function of distant clusters.