Stellar death

A star's "life" ends when there is no more nuclear fusion. After this is will end up in one of the following states, depending how much mass is left.

White dwarf

Type I: no H absorption lines
- Type Ia: silicon absorption line
- Type Ib: no silicon, but helium absorption line
- Type Ic: no silicon or helium
Type II: H absorption lines
- II-P: plateau in the light curve
- II-L: linear decrease in magnitude with time
- IIb: starts like a type II, but comes like a type Ib
- IIn: narrow spectral lines
pec: Peculiar - neither type I nor II

Type	Peak abs. mag.	Days to peak	Days from peak to 10% luminosity
Ia	−19	approx. 19	around 60
Ib/c (faint)	around −15	15–25	unknown
Ib	around −17	15–25	40–100
Ic	around −16	15–25	40–100
Ic (bright)	to −22	roughly 25	roughly 100
IIb	around −17	around 20	around 100
II-L	around −17	around 13	around 150
II-P (faint)	around −14	roughly 15	unknown
II-P	around −16	around 15	Plateau then around 50
IInd	around −17	12–30+	50–150
IIn (bright)	to −22	above 50	above 100