Black Hole Theory

Started by Markls, 11/26/2008 11:44PM
Posted 11/26/2008 11:44PM | Edited 11/26/2008 11:56PM Opening Post
If this star is shedding its mass so frequently, is it not reasonable to suggest it could shed enough, often enough, to be under the mass needed to become a black hole?
If this superstar sheds its mass this way, wouldn't other super massive stars behave the same way.
The what is left to create black holes?

Edited Post:
Sorry, I was referring to this article:
The 1843 Eruption of Eta Carinae May Represent a New Class of Star Explosion

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Posted 11/27/2008 02:06AM | Edited 11/27/2008 02:18AM #1
Mark, not all supernova become black holes Supernovae are divided into two basic physical types:

Type Ia. These result from some binary star systems in which a carbon-oxygen white dwarf is accreting matter from a companion. (What kind of companion star is best suited to produce Type Ia supernovae is hotly debated.) In a popular scenario, so much mass piles up on the white dwarf that its core reaches a critical density of 2 x 109 g/cm3. This is enough to result in an uncontrolled fusion of carbon and oxygen, thus detonating the star.

Type II. These supernovae occur at the end of a massive star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy. If the star's iron core is massive enough then it will collapse and become a supernova.

If the collapsed core left behind by a type II supernova explosion has a mass of less than 2 or 3 solar masses, it becomes a neutron star. If more than 2 or 3 solar masses remains, not even neutron degeneracy pressure can hold the object up, and it collapses into a black hole, so if the mass is 1 to <2 solar masses maybe what you end up with as a Eta Carinae type event

Hopes this helps

Bob

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