0
White dwarfs are no longer undergoing fusion, so while they are initially very hot ... white-hot, in fact ... they slowly cool and eventually become black dwarfs, completely burnt-out stars. We don't know of any black dwarfs, because by definition they don't emit light and because the universe isn't old enough for any stars to have cooled that far yet. It's estimated based on known physics that it would take about a million billion (1015)years for a white dwarf to cool to the temperature of the cosmic background radiation, and possibly longer than that if WIMPs or proton decay exist.
A white dwarf is a small, dense stellar remnant left behind after a star, typically of low to medium mass, has exhausted its nuclear fuel and shed its outer layers. It is supported by electron degeneracy pressure.
A white dwarf is often the core of a star that has died. The outer portions of the star are blown away while the core collapses into a dense remnant.
Van Maanen's star is a white dwarf star. It is the third closest to the Sun and is located 14.1 light years from us in the constellation Pisces.
IK Pegasi B is a white dwarf star.
See related link for a pictorial - the white star is IK Pegasi A and the yellow star is our Sun. The small white dot - is IK Pegasi B
The smallest white dwarf is White Dwarf A.C.+70°8247 - with a diameter roughly half that of Earth.
Add your answer:
Earn +20 pts
The sun will eventually end up as a?
white dwarf star
Is a white dwarf smaller than a red dwarf?
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.
What is the radius of a white dwarf with a mass of 1.5 solar units?
Such a white dwarf could not exist. Above 1.4 solar masses a white dwarf will collapse to form a neutron star.
Will the sun be a white dwarf for the rest of eternity?
No, the sun will eventually evolve into a red giant before shedding its outer layers and becoming a white dwarf. The white dwarf stage marks the end of its evolution, where it will slowly cool down over billions of years.
When was White Hole - Red Dwarf - created?
White Hole - Red Dwarf - was created on 1991-03-07.
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 type of stars has a low temperature and high luminosity?
A white dwarf.A white dwarf.A white dwarf.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.
Are white dwarf stars always white?
No in the life cycle of a star, a white dwarf can cool and become a black dwarf
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.
Is the white dwarf the biggest star?
No a white dwarf is a small compact star.
When was White Dwarf - magazine - created?
White Dwarf - magazine - was created in 1977.
When was The White Dwarf created?
The White Dwarf was created on 1963-02-17.
Are white dwarf stars young?
No. A white dwarf is a remnant of a dead star.
The sun will eventually end up as a?
white dwarf star
A star that is very hot but dim is a?
That might be a white dwarf.
White Dwarf is one of the final stages in?
A stars evolution. Our Sun will go yellow dwarf -> red giant -> white dwarf -> black dwarf.
