Changing Ionization Conditions in SDSS Galaxies with AGN as a Function of Environment from Pairs to Clusters

Emil T. Khabiboulline, Charles L. Steinhardt, John D. Silverman +3

We study how AGN activity changes across environments from galaxy pairs to clusters using $143843$ galaxies with $z<0.2$ from the Sloan Digital Sky Survey (SDSS). Using a refine…