SURFACE PHOTOMETRY OF BINARY GALAXIES .1. A MULTICOLOR STUDY OF MORPHOLOGIES DUE TO THE INTERACTION

We present the multicolour (B, V, R) surface photometry of 53 double g alaxies. All the pairs belong to the catalogue of Reduazi & Rampazzo ( 1995) containing objects selected according to the Karachentser; (1972 ) criteria. We comment on the morphological, structural and photometri c characteristics of pairs and their members. Different classes of int eraction induced phenomena, both among early and late-type galaxies, a re considered. We found that few early-type galaxies show fine structu res. Grand design structure is more frequently detected in binary than in field spirals both for barred and non barred, confirming Elmegreen & Elmegreen's (1982) study. The colour of the tails is consistent wit h the stripping hypothesis since it is similar to the progenitor galax y outskirts. Among our objects we have no evident sign of induced star formation in tails. Rings appear on average bluer than the disc as a whole.