Abstract
The general problem of a supernova explosion in a binary star system is studied. We show that to a good approximation the effect of the impinging blast wave which strips and ablates mass from the companion can be expressed in terms of a single parameter. The eccentricity imparted to the system and the ratio of final to initial semimajor axes depend on two to six parameters, depending on the level of approximation. Results for calculations of the eccentricity imparted to an initially circular system are presented by means of graphs, tables, and simple fitting formulae for two basis types of models; one in which the companion is a ''normal'' star (polytrope, n=3) and one in which the companion is in a ''red- giant'' phase.
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