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What is a brown dwarf and is it different from a white dwarf star?
Wiki User
∙ 14y ago
- A white dwarf is the remnant of a massive star that has shed much of its mass. The dwarf starts out very hot but slowly loses its heat as it no longer has the mass or the hydrogen to carry on with fusion.
- A brown dwarf is a celestial body that doesn't have sufficient mass to initiate hydrogen fusion and thereby become a true star. They have heat due to their initial gravitational contraction or maybe even a brief deuterium, lithium fusion stage but are now little more than a (hot) giant planet.
Wiki User
∙ 14y ago
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Will the sun become a brown dwarf?
No. A brown dwarf is a failed star, one that is not massive enough to start nuclear fusion. The sun is well above the threshold of fusion. When it dies it will become a white dwarf.
Does a star change during its life cylcle?
Yes. The possible cycle is: protostar/brown dwarf main sequence star red giant supernova/super giant white dwarf/black hole black dwarf
What star is known as the faint white star?
a white dwarf star
Which is the correct order - white dwarf or red?
It is called white dwarf. A white dwarf is a small star. If you heard of red giant it mean huge star.
What is a brown dwarf?
A brown dwarf is a celestial object that has a size that is between a star and a giant planet.
Is a brown dwarf star on its way to becoming a black dwarf?
No. A brown dwarf is a star that has too low a mass to start nuclear fusion. A black dwarf is a former white dwarf, the remnant of a low to medium mass star that ran out of fuel in its core.
What is a small star that only gives of faint light and are cool?
That can either be an old white dwarf, a red dwarf. or a brown dwarf.
What is the size of dwarf stars?
Several times smaller than our Sun. Details vary, depending on the type of dwarf star (a red dwarf and a white dwarf are quite different things), and the exact mass.
Is Pluto a white dwarf star?
Pluto is not a white dwarf star, it is just a dwarf planet.
Is a dwarf star and a white dwarf the same thing?
No. A dwarf star is a small star. A white dwarf is just one particular type of dwarf star, but there are other types.
Is the white dwarf the biggest star?
No a white dwarf is a small compact star.
Is it necessary for a star to carry out fusion reaction?
Well, white dwarf, brown dwarf, and neutron stars don't; but they are "dead" stars.
Is a white dwarf star including in plasma?
No. A white dwarf is not plasma. It is an entirely different state known as electron degenerate matter.
Will the sun become a brown dwarf?
No. A brown dwarf is a failed star, one that is not massive enough to start nuclear fusion. The sun is well above the threshold of fusion. When it dies it will become a white dwarf.
Is Pollux a white dwarf star?
No, Pollux is not a white dwarf, it is a orange giant star.
What is a cooled white dwarf star that is extremely dense?
A cooled white dwarf is a black dwarf. I think you are thinking of a neutron star which has nothing to do with a white dwarf.
Why would a white dwarf become a red dwarf?
A white dwarf could not become a red dwarf. A white dwarf is a remnant of a dead star. A red dwarf is a star with a very low mass.
