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White dwarfs become novae when they accrete matter from a companion star's outer layers. This matter builds up on the surface of the white dwarf until a critical temperature and pressure is reached, triggering a runaway nuclear fusion reaction. This explosion releases a vast amount of energy and causes the white dwarf to temporarily brighten significantly.
What else can I help you with?
Do stars die out after becoming white dwarfs?
No. Stars become white dwarfs after dying.
What do stars that have ejected a planetary nebula eventually become?
Stars that have ejected a planetary nebula eventually become white dwarfs. These are core remnants of low to medium mass stars that have exhausted their nuclear fuel. White dwarfs gradually cool down over billions of years to become black dwarfs.
What are the differences between Type I and Type II novae?
Type I novae occur in binary star systems where one star is a white dwarf and the other is a normal star. The white dwarf accretes material from the normal star until it reaches a critical mass, causing a thermonuclear explosion. Type II novae, on the other hand, involve the collapse and explosion of a massive star at the end of its life cycle.
How long do white dwarfs shine before they cool completely?
White dwarfs shine for billions of years before they cool completely. As they cool, they become dimmer and eventually fade into darkness, becoming black dwarfs. However, the process of a white dwarf cooling into a black dwarf takes trillions of years.
Why do all white dwarfs have about the same mass?
All white dwarfs do not have about the same mass. White dwarfs vary in mass because the stars they form from are not all the same mass.
Do stars die out after becoming white dwarfs?
No. Stars become white dwarfs after dying.
What do stars that have ejected a planetary nebula eventually become?
Stars that have ejected a planetary nebula eventually become white dwarfs. These are core remnants of low to medium mass stars that have exhausted their nuclear fuel. White dwarfs gradually cool down over billions of years to become black dwarfs.
Why no red dwarfs have become white dwarfs?
Red dwarfs have not yet evolved into white dwarfs because red dwarfs are much less massive than other types of stars that do become white dwarfs. Red dwarfs are the smallest and coolest stars, and they have not burned through their fuel quickly enough to go through the stage of becoming a white dwarf. It will take billions of years for a red dwarf to cool and fade into a white dwarf.
What is the diffrance between stars that become white dwarfs and stars that become neutron stars?
Stars that become white dwarfs die but become black holes . Neutron stars are born from a Super Nova that stored its energy and became a neutron star.
What do white dwarf stars become?
Black dwarfs. [See related question]
A dying star shrinks to this?
Dying stars eventually shrink into white dwarfs (which as they age eventually become red dwarfs and then brown dwarfs - but this takes an extremely long time).
Are black dwarfs a solid liquid or a gas?
None of the above. White dwarfs and the black dwarfs they will become consist of a unique state of matter called electron degenerate matter.
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.
Very small stars that are usually old and running out fuel are called?
Those are dwarf stars, which start out as white dwarfs and as they (very slowly) cool, become red dwarfs and eventually brown dwarfs.
What are the differences between Type I and Type II novae?
Type I novae occur in binary star systems where one star is a white dwarf and the other is a normal star. The white dwarf accretes material from the normal star until it reaches a critical mass, causing a thermonuclear explosion. Type II novae, on the other hand, involve the collapse and explosion of a massive star at the end of its life cycle.
What occupationdo the Dwarfs in Snow White have?
Did Snow White ever had sex with the dwarfs
Why have no white dwarfs cooled to form black dwarfs in the galaxy?
According to astronomers and authors Jonathan Weiner and Carl Sagan, white dwarfs - which have been an accepted entities by all astronomers for decades - require an amount of time to "cool down" that well exceeds the current age of the universe - hence there hasn't been enough time for any of them to cool down yet and become "black dwarfs".
