Baade & Zwicky 1934 [1]
Energy release ergs
Remnant could be a neutron star
Cosmic rays may form in supernovae
Expanding shells of gas km/s
Type I
Heavy element lines
From population II stars (low metalicity)
Occur in elliptical and spiral galaxies
1a - Merger or collapse of white dwarfs
1b - Carbon flash destroys star
Type II
Predominantly H lines
From population I stars (high metalicity)
Occur only in spiral galaxies
Core collapse in massive stars