The Evolution of Galaxy Clusters and their Galaxies

分析钱德拉对15个遥远星系团的观测，主要是为了确定这些星系团中AGN污染的程度。这项工作将审查最遥远的候选星团，并将检测任何贡献了XXL总通量25%的AGN。我也会净化安全集群，目前认为这些集群中含有AGN，并且部分受到AGN排放的污染。由此，我们将能够建立一个已知AGN污染的z bbb101簇样本，这对未来的研究非常重要。最后，我们将提高我们对遥远集群选择函数的理解。

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.