ИСТИНА

We investigate the distribution of different types of SNe along the radius and in height above the galactic plane in spiral galaxies. We find out that a significant fraction of CCSNe is not detected in the central parts of the galaxies even by modern CCD search programs. Comparing the radial distributions of subtypes of CCSNe we reveal higher concentration of SNe Ib, Ic and IIn to the centers of the galaxies, while SNe IIP and IIn show similar and more flat distribution. We estimate the scale hight of SNe above the galactic plane and find out that it is smaller for SNe Ibc than for type II SNe.