Absolute magnitudes of supernovae.

Abstract

The maximum indicative absolute magnitudes of 33 supernovae are derived. For supernovae of type I, the average absolute magnitude is M=-18.6+5log(H/100). For type II, the average is M=-16.5+5log(H/100). These values are lower limits, which neglect the effects of absorption within the parent galaxies. The redshift-magnitude relation for type I supernovae is shown, and the usefulness of these supernovae as distance indicators is discussed.