Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21823602w&link_type=abstract
American Astronomical Society, AAS Meeting #218, #236.02; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Using double-lobed radio sources from the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) survey, and optical counterparts in the Sloan Digital Sky Survey (SDSS), we have identified a large number of galaxy clusters. These radio sources are driven by active galactic nuclei, and our cluster samples include objects with bent, double-lobed sources and straight, double-lobed sources. We also included a single-component comparison sample. We examine these galaxy clusters for evidence of optical substructure, testing the possibility that bent sources are formed in large-scale mergers. We use a suite of substructure analysis tools to determine the location and extent of substructure visible in the optical distribution of cluster galaxies, and compare the rates of substructure in clusters with different types of radio sources. Additionally we measure the position of the radio source in relation to the center of the cluster.
Blanton Elizabeth
Wing Joshua
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