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a black dwarf
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What is A white dwarf which has stopped radiating energy?
Black Dwarf.
Does a white dwarf star use hydrogen for energy?
No. A white dwarf is the remnant of a star in which fusion has stopped. There is no hydrogen left. All the energy left in a white dwarf is residual heat.
Does fusion occur in white dwarf stars?
No. A white dwarf is the remnant of a star in which fusion as stopped.
Can a white dwarf that has no fuel make its own energy?
No. The energy of a white dwarf is simply residual heat.
What gas is being used as a fuel source for the white dwarf?
There is no fuel for a white dwarf. A white dwarf is a remnant of a star in which fusion has stopped. There is, however, quite a bit of leftover heat, so the white dwarf still glows.
Why is a white dwarf considered a dead star?
A white dwarf is not considered a "dead star." It is considered a dying star, but not dead yet. A white dwarf is at its smallest state and could become a supernova when its center runs out of fuel to burn.
When a white dwarf star no longer emits energy what does it become?
A black dwarf.
Why is the density of a red giant less than a white dwarf?
A red giant has been greatly inflated by the energy from nuclear fusion in a shell around the core. In a white dwarf fusion has stopped, the core has collapsed, and the low-density outer layers have been expelled into space.
The point in stellar evolution when a star has used up all its fuel and is radiating away its remaining thermal energy as light?
White dwarf stage. Note that not all stars reach this stage. Some stars experience runaway criticality and go supernova. Also, white dwarf stars in binary systems can still go nova if they are acquiring hydrogen from their partner.
Is a white dwarf considered a main sequence star?
No, a white dwarf is not considered a main sequence star. A main sequence star is a star that is still fusing hydrogen in its core. A white dwarf is the remnant of a low to medium mass star in which fusion has stopped.
What star is very hot but gives off little light?
Answer: A shooting star Answer: One with a small surface, such as a white dwarf or a neutron star. These are "dead stars", in the sense that energy production has stopped.
What kind of star forms when a white dwarf uses up all its energy?
A white dwarf is the remains of a dead star, not the birth of a new one.
