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We investigate the influence of close neighbor galaxies on the properties ofsupernovae (SNe) and their host galaxies using 56 SNe located in pairs ofgalaxies with different levels of star formation (SF) and nuclear activity. Themean distance of type II SNe from nuclei of hosts is greater by about a factorof 2 than that of type Ibc SNe. For the first time it is shown that SNe Ibc arelocated in pairs with significantly smaller difference of radial velocitiesbetween components than pairs containing SNe Ia and II. We consider this as aresult of higher star formation rate (SFR) of these closer systems of galaxies.SN types are not correlated with the luminosity ratio of host and neighborgalaxies in pairs. The orientation of SNe with respect to the preferreddirection toward neighbor galaxy is found to be isotropic and independent ofkinematical properties of the galaxy pair.

Supernovae in paired host galaxies