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C. T. Liu (Columbia U./AMNH), J.H. van Gorkom (Columbia U.), J.E. Hibbard (NRAO), D. Schiminovich (Caltech), A. Fujita (Columbia)
We present the results of a deep broad-band imaging survey of a sample of early-type galaxies with known stellar shells. Deep BVR images of these galaxy shells have been obtained in order to measure their broad-band optical colors. In addition, deep V and R images of a corresponding sample of HI-selected "normal" ellipticals have been obtained, to see if they have previously undetected shells. The majority of the non-shell galaxies is found to be truly shell-less. A preliminary reduction of the shell sample shows that most of the shells have colors that are similar to the elliptical.
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