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An object below a certain mass will never become a star in the first place; rather, it will remain a brown dwarf. And an object above a certain mass will have such a strong gravitation (once its fuel runs out) that it will collapse into a neutron star, instead of a white dwarf.
What else can I help you with?
Why do all white dwarfs have about the same mass?
All white dwarfs do not have about the same mass. White dwarfs vary in mass because the stars they form from are not all the same mass.
When does a white dwarf die?
A white dwarf does not die in the traditional sense as it is already the end stage of a low-mass star's life cycle. However, over a very long period of time (trillions of years), a white dwarf will cool and fade away, eventually becoming a black dwarf.
Does a white dwarf star use hydrogen for energy?
No, white dwarf stars do not undergo nuclear fusion like main sequence stars, including our Sun. White dwarf stars are the remnants of low to medium mass stars, and they use stored thermal energy to shine and gradually cool over time.
What is a small hot star that is near the end of its life called?
There are small hot stars - White dwarfs, neutron stars but by furtue that they are hot, means they are not near the end of their lives. It takes a long long time for all the residual heat to escape into the Universe. So, there are NO hot stars near the end of it's life.
A typical white-dwarf star is the size of your moon but has the mass of your sun what is the surface gravity of this star?
The surface gravity of a white dwarf star with the mass of our Sun and the size of our Moon would be extremely high, much greater than what we experience on Earth. This is because gravity is directly proportional to the mass of the object. The intense gravity on the surface of such a white dwarf would crush any normal matter that comes into contact with it.
Why do all white dwarfs have about the same mass?
All white dwarfs do not have about the same mass. White dwarfs vary in mass because the stars they form from are not all the same mass.
What is the next stage in the life of a lower-mass main-sequence star?
white dwarf. unless you count black dwarf of which none have been observed, only theorized.
When does a white dwarf die?
A white dwarf does not die in the traditional sense as it is already the end stage of a low-mass star's life cycle. However, over a very long period of time (trillions of years), a white dwarf will cool and fade away, eventually becoming a black dwarf.
Does a white dwarf star use hydrogen for energy?
No, white dwarf stars do not undergo nuclear fusion like main sequence stars, including our Sun. White dwarf stars are the remnants of low to medium mass stars, and they use stored thermal energy to shine and gradually cool over time.
What is a small hot star that is near the end of its life called?
There are small hot stars - White dwarfs, neutron stars but by furtue that they are hot, means they are not near the end of their lives. It takes a long long time for all the residual heat to escape into the Universe. So, there are NO hot stars near the end of it's life.
Is a dead star the some as a black dwarf?
No, a dead star is different from a black dwarf. A black dwarf is a type of stellar remnant, but not all stars become black dwarfs. When a star dies it will leave behind a white dwarf, a neutron star, or a black dwarf as a remnant depending on its mass. Given enough time a white dwarf will eventually cool to a black dwarf. The universe is not old enough for this cooling to have happened yet.
A typical white-dwarf star is the size of your moon but has the mass of your sun what is the surface gravity of this star?
The surface gravity of a white dwarf star with the mass of our Sun and the size of our Moon would be extremely high, much greater than what we experience on Earth. This is because gravity is directly proportional to the mass of the object. The intense gravity on the surface of such a white dwarf would crush any normal matter that comes into contact with it.
What keeps white dwarf from collapsing under its own weight?
A white dwarf star, as well as any other stable variety of star,is held together by the pressure popularly known as "gravity".In the opposite direction, white dwarf stars are kept from collapsing completely by degeneracy pressure. Specifically, for white dwarf stars, it's electron degeneracy pressure, which arises from the fact that electrons are fermions and cannot all occupy the same energy state. For higher mass stars, the force of gravity is able to overcome this and push all the electrons into the ground state, and the star is supported by a different kind of degeneracy ... neutron degeneracy, which is the same thing but with neutrons ... and you get a neutron star. At even higher masses, even that isn't sufficient and the star collapses all the way into a black hole.
When a white dwarf loses all of its heat and cools down it become a?
black dwarf
What happens to stars which are less massive than sun?
Stars with more than about 80% of the Sun's mass behave like the Sun. They should eventually become red giant stars then white dwarf stars. Stars with mass of between about 8% and 80% of the Sun's mass are red dwarf stars. Below that come the "brown dwarfs, which aren't really true stars at all. The red dwarfs cannot fuse helium, so they simply become "white dwarf" stars when they have used up all their hydrogen "fuel".
What is a white and red dwarf star?
A White Dwarf star starts as a small to intermediate size star, like our Sun is currently. That eventually becomes a red giant star. Eventually that blows off everything but the hot very dense core of "electron degenerate matter". What is left is a hot ball of mainly carbon and oxygen that will eventually cool and dim and turn into a black dwarf star. A white dwarf has a second chance of life and death in a close binary star system, where the white dwarf draws mass from the companion star. Once the mass of the white dwarf reaches the Chandrasekhar limit of approximately 1.38 solar masses or roughly 140% of the mass of our Sun, the core can no longer hold the gravitational pressure and a Type 1a Supernova may occur. A Red Dwarf star is a " Main Sequence " star, but with very low mass and luminosity. You need a telescope to see one. However, they make up about 80% of all stars and they have very long lifetimes.
What color is a white dwarf star?
It is a whitish color. Seems like a stupid question, but in fact it's not. Not all these stars are white. They can be red or blue for example. Astronomers don't always give things "sensible" names.
