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Shell galaxies are considered the debris of recent accretion/mergingepisodes. Their high frequency in low density environments suggest that suchepisodes could drive the secular evolution for at least some fraction of theearly-type galaxy population. We present here the preliminary results ofultraviolet and X-ray data for a sample of three shell galaxies, namely NGC474, NGC 7070A and ESO 2400100. The Far UV morphology and photometry arederived using the observations obtained with the Galaxy Evolution Explorer andthe XMM- Newton Optical Monitor. We aim at investigating the rejuvenationprocesses in the stellar population using the UV information as well as atgaining information about the possible evolution with time of the X-rayemission due interaction/merging processes.

Far UV and X-ray observation: a hot view of shell galaxies