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What is the minimum size that a star needs to be to undergo a supernova?

What is the minimum size that a star needs to be to undergo a supernova?

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2 Answers

L. Sevigny

L. Sevigny, Doctor, Las Vegas

Answered on Jan 24, 2019

There are two main types of supernova. Type Ia happens when a white dwarf star accumulates too much mass from its companion in a binary star system, while Types II and Ib/c caused when a massive star collapses at the end of its fusion sequence.

Type Ia supernovae explode when the mass of the white dwarf exceeds the Chandresekhar Limit of about 1.39 Solar Masses. The process underlying this explosion is so uniform that they are used as "standard candles" to estimate distances in space.

Type II supernovas explode when a star exceeding about eight Solar Masses collapses because its fusion reaction no longer provides sufficient outward pressure. Following the explosion, the remnant of the star may be a neutron star or a black hole depending on the size and nature of the collapse.

Types Ib and Ic are similar, but they give off different radiation spectra because they have lost their outer layer of Hydrogen. Prior to understanding of the underlying mechanisms, the naming convention was adopted.

L. Sevigny

L. Sevigny, Doctor, Las Vegas

Answered on Dec 03, 2018

There are different heavenly bodies that can be found in the sky. Even when we see twinkling lights, we cannot assume that all of them are stars. Stars have to be of a certain weight before they can be considered as a star. They have to be 0.075M. There may be moments when it can be 0.073-0.077.

it will depend on the type of dust particles and gas that can be found in that certain area. If the object does not reach that size then it may not become a star unless its gravitational pull will allow it to get more dust, gas, and other elements in order to sustain its growth.

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