What is the final stage of a high-mass star?

What is the final stage of a high-mass star?

What is the final stage of a high-mass star? Eventually, the star ends up as a dense white dwarf, which slowly cools and dims and cools and dims.

What happens to a star that is very high-mass at the end of its life cycle?

A massive star will undergo a supernova explosion. If the remnant of the explosion is 1.4 to about 3 times as massive as our Sun, it will become a neutron star. The core of a massive star that has more than roughly 3 times the mass of our Sun after the explosion will do something quite different.

What are the stages of fusion in a high-mass star?

The exact stages of evolutions are:

• Subgiant Branch (SGB) – hydrogen shell burning – outer layers swell.
• Red Giant Branch – helium ash core compresses – increased hydrogen shell burning.
• First Dredge Up – expanding atmosphere cools star – stirs carbon, nitrogen and oxygen upward – star heats up.

What is the last fusion reaction to happen in the core of a high-mass star?

Figure 1: Structure of an Old Massive Star. The fusion of silicon into iron turns out to be the last step in the sequence of nonexplosive element production. Up to this point, each fusion reaction has produced energy because the nucleus of each fusion product has been a bit more stable than the nuclei that formed it.

What is the lifespan of a high-mass star?

about 2.5 million years
A star with a mass 25 times that of the Sun will live for about 2.5 million years.

What are the two possible end stages for a high-mass star?

The final fate of a very massive star, whether it explodes as core collapse supernova, as pair instability supernova, as black-hole accretiondriven supernova, as gamma-ray burst, or just collapses to a black hole, depends on how much mass the star has left when it reached the end of its evolution.

What are the 7 stages of a high mass star?

Seven Main Stages of a Star

• Giant Gas Cloud. A star originates from a large cloud of gas.
• Protostar. When the gas particles in the molecular cloud run into each other, heat energy is produced.
• T-Tauri Phase.
• Main Sequence.
• Red Giant.
• The Fusion of Heavier Elements.
• Supernovae and Planetary Nebulae.

How long does a high mass star live?

A star with a mass 25 times that of the Sun will live for about 2.5 million years.

What is the lifespan of a high mass star?

10 million years
High-mass stars have lives of 10 million years, versus 10 to 50 billion years or more for low-mass stars. At the end of a high-mass star’s fusion process, iron composes the star’s core. No nuclear fusion of iron is possible out of a high-mass star core, which has the same mass as our entire Sun.

Where is fusion happening in a massive star supernovae quizlet?

A(n) massive star supernova occurs when fusion creates iron in the core of a star.

What stars are high mass?

High mass stars (stars with masses greater than three times the mass of the Sun) are the largest, hottest and brightest Main Sequence stars and blue, blue-white or white in colour. High mass stars use up their hydrogen fuel very rapidly and consequently have short lives.