Diffuse Optical Light in Galaxy Clusters II: Correlations with Cluster Properties

Understand

We have measured the flux, profile, color, and substructure in the diffuse intracluster light (ICL) in a sample of ten galaxy clusters with a range of mass, morphology, redshift, and density.

• Deep, wide-field observations for this project were made in two bands at the one meter Swope and 2.5 meter du Pont telescope at Las Campanas Observatory.
• Careful attention in reduction and analysis was paid to the illumination correction, background subtraction, point spread function determination, and galaxy subtraction.
• ICL flux is detected in both bands in all ten clusters ranging from 7.6 x 10^{10} to 7.0 x 10^{11} h^{-1} solar luminosities in r and 1.4 x 10^{10} to 1.2 x 10^{11} h^{-1} solar luminosities in the B-band.