D. Yu. Tsvetkov*, N. N. Pavlyuk**, and O. S. Bartunov***
Sternberg Astronomical Institute, Universitetski˘ı pr. 13, Moscow, 119992 Russia Received May 18, 2004 Abstract—We describe the Sternberg Astronomical Institute (SAI)catalog of supernovae. We show that the radial distributions of type-Ia, type-Ibc, and type-II supernovae differ in the central parts of spiral galaxies and are similar in their outer regions, while the radial distribution of type-Ia supernovae in elliptical galaxies differs from that in spiral and lenticular galaxies. We give a list of the supernovae that are farthest from the galactic centers, estimate their relative explosion rate, and discuss their possible origins.
c 2004MAIK “Nauka/Interperiodica”.
Key words: astronomical catalogs, supernovae, observations, radial distributions of supernovae.