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We present the first results from an integral field (IFU) spectroscopicsurvey of a 75kpc region around three Brightest Cluster Galaxies (BCGs),combining over 100 IFU fibres to study the intracluster light (ICL). We fitpopulation synthesis models to estimate age and metallicity. For Abell 85 andAbell 2457, the ICL is best-fit with a fraction of old, metal-rich stars likein the BCG, but requires 30-50% young and metal-poor stars, a component notfound in the BCGs. This is consistent with the ICL having been formed by acombination of interactions with less massive, younger, more metal-poor clustermembers in addition to stars that form the BCG. We find that the three galaxiesare in different stages of evolution and may be the result of differentformation mechanisms. The BCG in Abell 85 is near a relatively young,metal-poor galaxy, but the dynamical friction timescale is long and the two areunlikely to be undergoing a merger. The outer regions of Abell 2457 show ahigher relative fraction of metal-poor stars, and we find one companion, with ahigher fraction of young, metal-poor stars than the BCG, which is likely tomerge within a gigayear. Several luminous red galaxies are found at the centreof the cluster IIZw108, with short merger timescales, suggesting the system isabout to embark on a series of major mergers to build up a dominant BCG. Theyoung, metal-poor component found in the ICL is not found in the merginggalaxies.

Stellar Populations of BCGs, Close Companions and Intracluster Light in Abell 85, Abell 2457 and IIZw108