Novae and Supernova

Tycho supernova

1572

when was oldest supernova recorded

185 CE

When was the brightest event in human history recorded

1006 CE

when was the crab nebula recorded

1054 CE

who discovered supernova’s

Fritz Zwicky and Walten Baade

what year did fritz Zwicky and Walten Baade predicted supernova

1931

Nova

Red giant and white dwarf binary star system

how are Novas formed

White dwarfs take hydrogen from red giant envelopes

Thermonuclear detonation

runaway hydrogen fusion

what is the distance of Novas

20 mega pc

how bright is a nova

100,000 sun brightness

type 1 supernova

No hydrogen lines

type I A supernova

white dwarf supernova

what is the limit of type IA supernova

1.4 Ms

how can a white dwarf exceed 1.4 Ms

Accretion of matter from red giant or supergiant, White dwarf merger

Type II

Massive star collapse

characteristics of type II supernova

hydrogen lines

type II B/C

Massive star core collapse

Neutron star

formed from the remanent of a supernova.

what is the upper limit of Neutron stars

3 MS

Who discovered neutron stars and what year

Jocelyn Bell, 1967

pulsar

spinning neutron star whose beams hits Earth