Table of Contents
What determines if a star will become a supernova or red giant?
Hydrogen fusion continues only in the star’s outer layers, which causes it to expand. It becomes a red giant. If the star doesn’t have enough gravity to do that, it will release its cooling outer layers into space.) A white dwarf with enough mass will eventually go supernova.
What causes a main sequence star to become a red giant?
When the stars go out Eventually, a main sequence star burns through the hydrogen in its core, reaching the end of its life cycle. At this point, it leaves the main sequence. Then the pressure of fusion provides an outward thrust that expands the star several times larger than its original size, forming a red giant.
What is the difference between a red giant and a super red giant?
While a red giant might form when a star with the mass of our Sun runs out of fuel, a red supergiant occurs when a star with more than 10 solar masses begins this phase. In comparison, regular red giant is only 200 to 800 times the size of the Sun.
How can you determine that is about to turn into a red giant?
Answer: Answer:In approximately 5 billion years, the sun will begin the helium-burning process, turning into a red giant star. When it expands, its outer layers will consume Mercury and Venus, and reach Earth.
How is a red giant star formed?
A red giant star is formed when a star, like our Sun, burns all of its hydrogen and helium supplies. This process can take up to 10 billion years. When a star becomes a red giant, it will start to expand and become denser.
What makes a star in the main sequence a giant?
In this bizarre geometry, even though the interior temperature is far hotter than on the main sequence, the outer layers expand and cool, producing a red giant. The horizontal branch is also called the helium-burning main sequence. Eventually, the temperature of the stellar core gets so high, helium fusion can occur.
What happens to a star when it becomes a red giant?
This newly generated heat temporarily counteracts the force of gravity, and the outer layers of the star are now pushed outward. The star expands to larger than it ever was during its lifetime — a few to about a hundred times bigger. The star has become a red giant. What happens next in the life of a star depends on its initial mass.
How is the size of a StAR related to its life cycle?
The larger its mass, the shorter its life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born.
What happens to a star during the subgiant phase?
Stars in this phase are usually referred to as subgiants. Next, the star will grow to as much as, or even more than, 100 times its original size, which will cause a significant increase in luminosity with only a small decrease in temperature, so the star will move almost vertically in the HR diagram.