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The brightness of a star depends (a) on its temperature, which affects the amount of radiation emitted per square meter, and (b) the total surface area. A white dwarf has a very small surface area - around 1 / 10,000 the area of our Sun.
White dwarf stars are the compressed cores of a dead star, so it is very hot. Since a white dwarf is also small, it emits less light than most stars, so they are dim.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoNo, they are actually quite hot. Their effective surface temperatures range from 4000 kelvin to over 150,000 kelvin. Their interior is more like 10 million kelvin. Since white dwarves no longer produce energy through nuclear fusion, they will gradually cool down, but no white dwarf has had the time to cool down significantly yet, since our Universe it simply too young for that.
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∙ 15y agohot
Wiki User
∙ 15y ago180,000 F
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Does fusion occur in white dwarf stars?
No. A white dwarf is the remnant of a star in which fusion as stopped.
Is the sun in the collection of white dwarf stars?
NO.
What type of stars has a low temperature and high luminosity?
A white dwarf.A white dwarf.A white dwarf.A white dwarf.
Why are White Dwarf stars so dim?
White dwarfs are dim because they are small, and small stars radiate less light.
What do white dwarf stars become?
Black dwarfs. [See related question]
Are white dwarf stars young?
No. A white dwarf is a remnant of a dead star.
Are white dwarf stars always white?
No in the life cycle of a star, a white dwarf can cool and become a black dwarf
Does fusion occur in white dwarf stars?
No. A white dwarf is the remnant of a star in which fusion as stopped.
Are there dwarf stars other than red and white like maybe blue?
Yes there are a few more [See related link for more information].--- Main sequence stars -----Red dwarf Yellow dwarfBlue dwarf (hypothetical)--- Degenerate stars --------White dwarf Black dwarf (hypothetical)--- Sub stellar stars -------Brown dwarf.
Is white dwarf a star?
Many stars are white dwarfs.
What are the smaller stars called?
A white dwarf
Is the sun in the collection of white dwarf stars?
NO.
White Dwarf is one of the final stages in?
A stars evolution. Our Sun will go yellow dwarf -> red giant -> white dwarf -> black dwarf.
Is betelgeuse hotter than a white dwarf?
No, the surface temperature of Betelgeuse is colder than the temperature of a white dwarf, the white dwarf is the hot core of a dead star. Also, red stars are always colder than white stars.
Do white dwarf stars have many craters?
Since white dwarf, like all stars, are made up of plasma (ionized gas), they have no craters on their surfaces.
Are white dwarf stars a low mass star?
A white dwarf is the remnant of a low to medium mass star.
What is the classification for small and hot stars?
White Dwarf.
