A type I supernova is believed to occur when?

Question

A.) the core of a massive star collapses
B.) carbon detonation occurs
C.) a white dwarf exceeds the Chandrasekhar limit
D.) the cores of massive stars collapse
E.) neutrinos in a massive star become degenerate and form a shock wave that explodes the star

Answer 1

Answer is C

Basically after a small star novas and collapses in to a white-dwarf a lot of the outer gases are thrown in to space creating a planetary nebula. A white-dwarf is typically carbon and oxygen or neon oxygen depending on the mass of the core remnant. White-dwarfs are extremely dense and thus extremely hot. Some of the gases from the planetary nebula get pulled back to the white-dwarf by gravity and when they become superheated from the white-dwarf it causes the entire star to explode again in a much larger explosion...due to the extreme heat of the densly packed atoms in the white-dwarf. And thus.....a type 1 supernova

Answer 2

Well, this question is incomplete, and clarification would change the correct answer.

There's actually no such thing as just a "Type I" supernova. The classifications go like this:

Ia
Ib
Ic
IIP
IIL

Each of them is believed to be created by a different mechanism.

For type Ia, the answers would be B) and C)
For type Ib and Ic, the answer would be A) and I guess D) - which is just the plural of A)
E) would be for types IIP and IIL. If the remnant core here is less than 2 or 3 solar masses, it would leave a neutron star or pulsar. If greater than this, it would leave a black hole.

Answer 3

C

Answer 4

C