Peculiar, low-luminosity Type II supernovae: low-energy explosions in massive progenitors?
Peculiar, low-luminosity Type II supernovae: low-energy explosions in massive progenitors?
A number of supernovae, classified as Type II, show remarkably peculiar properties such as an extremely low expansion velocity and an extraordinarily small amount of 56Ni in the ejecta. We present a joint analysis of the available observations for two of these peculiar Type II supernovae, SN 1997D and SN …