Quintero and I discussed his work on duplicating his clustocentric distance measures for galaxies in a numerical simulation. He has made a group catalog analogously to Berlind's in the simulation, and is now "observing" the clustocentric distances, in order to test our hypothesis that his environmental dependences of color and radial profile will not be matched in the simulation.
Berlind, Blanton, and I discussed the relative merits of auto-correlations and cross-correlations for measuring bias and testing hypotheses. I am a huge believer in cross-correlations with dense populations. Berlind is about to test trends in cluster ages with environment.
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