An Examination of Active Galactic Nuclei in Galaxy Clusters
MetadataShow full item record
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.
Showing items related by title, author, creator and subject.
Violante, Christina F. (2011)People's memory for object locations is biased. If people know that objects are grouped together, they tend to cluster objects around a spatial center. Furthermore, research suggests that there are developmental differences ...
Wagner, Kurt (2001)The proposed study examines the impact of emotional intelligence training on overall emotional intelligence awareness and also focuses attention on the difficulties of learning social competence clusters (social awareness ...
Cybis (Kalamazoo College, 9999)Highly realistic rendition in natural color; comprised of four sprays, three blossoms, three buds, and numerous leaves; all based upon a carved "leaf" cartouche. It has been damaged and repaired.