For 10 points, name these cataclysmic events whose type 1a occurs when massive white dwarfs accumulate enough mass from a red giant counterpart to fuel a giant explosion.
An aberrant one of these events occurred in an object of around two solar masses, perhaps owing to particularly rapid rotation. In one type of these events, the pdecay of nickel-56 to cobalt-56 and iron-56 generates their consistent light curves, with maximum luminosity at an absolute magnitude of negative nineteen point three, allowing them to be used as standard candles. Core-collapse ones occur in red supergiants and are called type II. For 10 points, name these cataclysmic events whose type 1a occurs when massive white dwarfs accumulate enough mass from a red giant counterpart to fuel a giant explosion.
An aberrant one of these events occurred in an object of around two solar masses, perhaps owing to particularly rapid rotation.
{supernovae}