An Examination of Active Galactic Nuclei in Galaxy Clusters
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Cosmology is reviewed and Active Galactic Nuclei (AGN), the subject of the research, are introduced. A study of AGN is done using data from SDSS and a cluster Catalog. The focus is on AGN identified by their emission lines in the optical spectrum. The fraction of Brightest Cluster Galaxies (BCG) with AGN was determined and plotted versus three properties: redshift, the number of galaxies in the cluster, and luminosity. The same was done for the fraction of member galaxies with AGN. The relationship of redshift with the fraction of AGN had to be further investigated by making plots of apparent brightness and cutting for redshift. A larger catalog was used to look at clusters with as few as four galaxies, providing data to determine more certainly a relationship between the fraction of AGN and the number of galaxies in a cluster.
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