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As the name white dwarf implies, this is a small type of star, and it has less surface area from which to radiate light, so even if it is hot, and giving off lots of light per square mile, there are fewer square miles than in larger, non-dwarf stars, so there is less total light being emitted.
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∙ 12y ago
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∙ 8y agoWhile they are hot, white dwarfs are very small compared to other stars and therefore have a much smaller surface area fro which to emit light. Therefore the total amount of light they emit is relatively small.
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∙ 6y agoWhite dwarf stars are the dead remnants of stars that were no larger than our Sun. While hot and bright, they are no longer producing new energy and are gradually cooling down to become "black dwarf" stars.
White Dwarf Stars are all small about the same size as the Earth and thus while their surfaces are hot, they do not radiate from a large surface area and thus appear dim from a distance.
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∙ 11y agoBecause they are small, usually about the size of the Earth and thus difficult to see.
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∙ 9y agoA white dwarf is hot and dim because it is small, a small star is dimmer than larger stars.
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∙ 8y agoA white dwarf is hot, but has a very small surface area compared to a main sequence star, which limits how much light it can produce.
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∙ 9y agoA white dwarf star is the remaining core of a dead star, so it is extremely hot. The star is also dim because it is small, so it doesn't emit a lot of light in comparison to other stars.
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∙ 9y agoRelative heat and distance - they're small.
Hot translates into color -- white hot. Dim is how much light reaches us.
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Why are dwarf plants are hot but dim?
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
A star that is very hot but dim is a?
That might be a white dwarf.
Which category of stars is extremely hot and dim?
White dwarves.
Why no red dwarfs have become white dwarfs?
A red dwarf can last for a trillion years, or for several trillion years, before it runs out of energy (and turns into a white dwarf). That is much longer than the current age of the Universe. In other words, red dwarves didn't yet have time to become white dwarves.
If white dwarfs have exhausted their fuel why are they hot?
By residual heat - they have no fuel. See related question.
Why are dwarf plants are hot but dim?
I assume you mean a DWARF STAR. There are different types of dwarf stars; the white dwarfs are fairly hot - but the reason they are dim is that they have a very small surface area.
What best describes giant star?
hot, bright stars
What is the classification for small hot stars?
white dwarfs
What is classification for small hot stars?
white dwarfs
What classification for small hot stars?
white dwarfs
A star that is very hot but dim is a?
That might be a white dwarf.
Which category of stars is extremely hot and dim?
White dwarves.
How white dwarf stars can be both hot and dim?
White Dwarf Stars are very hot, like a ball of fire. They are dim because they are small and very far away.
Red-hot and blue-hot stars appear white to the eye because?
they are too dim to fire the cones
Why is the white dwarfs white?
They are called white dwarfs because when they form, although not replenishing their energy supply any more, they are still hot enough to shine. Overt time (a long time) however, they will cool down and become 'black dwarfs' which no longer emit light in visible wavelengths.
What is A small hot dim star that is the left over center of an old star?
white dwarf
Why no red dwarfs have become white dwarfs?
A red dwarf can last for a trillion years, or for several trillion years, before it runs out of energy (and turns into a white dwarf). That is much longer than the current age of the Universe. In other words, red dwarves didn't yet have time to become white dwarves.
