The luminosity of a white dwarf depends entirely on it's age. The older it is, the less luminous it is.
No, Rigel is not a white dwarf. Rigel is a blue supergiant star located in the constellation Orion. White dwarfs are the remnants of small to medium-sized stars that have exhausted their nuclear fuel and collapsed.
A white dwarf is a small, dense star that forms after a medium-sized star exhausts its nuclear fuel and sheds its outer layers. It is mainly composed of electron-degenerate matter, and its size is comparable to that of Earth, even though it can have a mass similar to that of the Sun.
white dwarf star
No Rigel is a huge, blue supergiant of spectral class B8 Ia, Rigel has an intrinsic brightness about 40,000 times as luminous as that of the sun.
Yes, far smaller. A red dwarf is a whole star in and of itself. A white dwarf is the collapsed remnant of the core of a low-to medium mass star. A white dwarf may be about the size of Earth.
White dwarf stars are not luminous because of their small sizes, they are not able to radiate a lot of light at once.
Right after the red giant has thrown off it's outer envelope, revealing a hot and very luminous white dwarf.
No, Rigel is not a white dwarf. Rigel is a blue supergiant star located in the constellation Orion. White dwarfs are the remnants of small to medium-sized stars that have exhausted their nuclear fuel and collapsed.
A white dwarf is a small, dense star that forms after a medium-sized star exhausts its nuclear fuel and sheds its outer layers. It is mainly composed of electron-degenerate matter, and its size is comparable to that of Earth, even though it can have a mass similar to that of the Sun.
A white dwarf.A white dwarf.A white dwarf.A white 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.
No in the life cycle of a star, a white dwarf can cool and become a black dwarf
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.
Spectral class Y, which is typical of "brown dwarf" stars.
white dwarf star
No a white dwarf is a small compact star.
That might be a white dwarf.