Notes on Extragalactic Supernovae

Abstract

1. Catalogues of supernovae. The recognition by W. Baade and F. Zwicky1 (first suggested by K. Lundmark2) that novae could be divided into two categories, ordinary novae and supernovae, immediately led to an effort to separate the ordinary from the supernovae in already existing lists of novae, and to discover more supernovae on both new and old photographs of external galaxies. Excellent lists of supernovae have been published by C. Bertaud3 and by B. V. Kukarkin and P. P. Parenago.4 A supplementary list of supernovae that do not appear in both of these lists is given in Table I. Many earlier supernova lists included