The final stage of the evolution of a star of between 0.07 and 1.4 solar masses; a star supported by electron degeneracy. white dwarfs are found to the lower left of the main sequence of the H-R diagram.
A small, dense remnants of a sunlike star in its last phase of life. It shines from stored heat.
A cold star, a few thousand miles in diameter. One of the ways a star can spend its old age. Exclusion principle repulsion among its electrons balances the pull of gravity to keep it from collapsing
A tiny, collapsed star, with the size of a planet but the mass of a regular star.
A dwarf star with a surface temperature that is hot, so that the object glows white.
Originally, a very small, very hot star. Now, an electron degenerate star which is hot enough to give off visible light. The last stage of life for most stars.
Star that has collapsed gravitationally into a small, very dense and faint object after expending its nuclear fuel.
A faint, extremely dense dying star that has used up its nuclear fuel and is slowly fading from view. A typical white dwarf has 60 percent of the Sun's mass but is little larger than the Earth.
A star which has about the same mass as the Sun, but occupies a volume about the same as the Earth.
a small, hot, faint star, essentially the leftover and exposed core of a red giant star that has puffed off its outer layers to form a planetary nebula. It is the last stage of evolution for stars like our Sun.
The exposed core of a star after it has ejected its atmosphere as a planetary nebula. A white dwarf is approximately the size of the Earth, but has the mass of the Sun.
a faint star of enormous density
a cool stable star, with a diameter of a few thousand kilometers, and a density of tens of tons per one squared centimeter
a dense core left after a star's normal, fusion-powered life has ended
a dying star that has been compressed under such internal pressure that it reignites itself in a quasi-spontaneous combust ion way
a dying star that has collapsed to something around the size of a planet
a star that has exhausted all its nuclear fuel and has collapsed to a very small size, about the size of the Earth
a star with a color like most other stars, but withlow absolute brightness
a star with low absolute brightness and 'normal' color
a star with the mass of the Sun, but only having a size about that of the Earth, and held from further collapse by the repulsion of the electrons inside the star
a stellar remnant and can be considered as a dead star
a tiny compact star, so dense that just one teaspoon of its matter would weigh about a tonne on Earth
a whitish star of low luminosity, small size, and very great density.
A stable cold star, supported by the exclusion principle repulsion between electrons.
A compact star, typically with a mass between about one half and slightly more than one solar mass (but less than 1.4 solar masses) and a radius comparable to that of the Earth. The density of white dwarf matter is about a million to 10 million times that of water. White dwarfs are the burned-out stellar remnants of formerly normal stars of modest mass (less than eight solar masses) that have exhausted their nuclear fuel.
White dwarfs (luminosity class wd) are the hot, compact, collapsed remains of stars that have exhausted their core fusion. They are about the size of the Earth but with the mass of the Sun hence are extremely dense. Electron degeneracy pressure prevents further collapse. White dwarfs are very hot but dim due to their small surface area.
A star which has used up its nuclear fuel and collapsed to a very small size.
A type of star which is very old, having cooled off and stopped nuclear fusion reactions. A white dwarf is supported by "electron degeneracy pressure" (no two electrons can be in the same place at the same time). These are produced when a star is not heavy enough to turn into a Neutron Star or a Black Hole.
A whitish star, of up to 1.4 Solar masses, and about the size of the Earth with consequential very high density, characterised by a high surface temperature and low brightness.
A small dense hot white star; the final stage in the evolution of stars with masses similar to the sun's or smaller
star made of degenerate carbon and oxygen (occasionally helium). Remnant of relatively low-mass star after expulsion of outer envelope as planetary nebula in asymptotic-giant-branch stage. Initially very hot, but no internal power source, so will gradually cool and fade.
The remnant core of a red giant star. White dwarfs are about the size of Earth but are much more dense than Earth. They are plotted along the bottom of the H-R diagram.
A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size. Typically, a white dwarf contains roughly the same mass as that of our Sun in a volume one hundredth the size. This gives a white dwarf a density about one million times that of water
A small, dense stellar remnant that was formed from a dying star whose dead mass was less than 1.4 solar masses. These are unltraviolet emitters.
This is what happens to low mass stars when they die. When there is no longer enough fusion fuel, to produce the pressure, to support the stars weight, the star must collapse. If the mass is greater than the Chandrasekhar limit of 1.4 solar masses, then it will form a neutron star or, if even more massive, a black hole. If however the star is less massive than the Chandrasekhar limit then it will form a white dwarf. As the star collapses in, unable to support its own weight it emits a cloud of gas, called a planetary nebula. The remainder of the star then continues to collapse until it becomes a very small white star, a white dwarf. The star is supported not by ordinary pressure but by electron degeneracy pressure, a quantum mechanical effect due to the Pauli exclusion principle. The star will then cool off until it becomes a cold dead black dwarf.
A star that is the remnant core of a star that has completed fusion in its core. The sun will become a white dwarf. White dwarfs are typically composed primarily of carbon, have about the radius of the earth, and do not significantly evolve further.
A very dense star with a mass below 1.4 solar masses that is no longer burning nuclear fuel. The Sun will one day evolve into a white dwarf with a diameter of 10 000 km.
A very small, white star formed when an average sized star uses up its fuel supply and collapses. This process often produces a planetary nebula, with the white dwarf star at its center.
a star that has run out of fuel to burn and is slowly cooling off.
A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; such a star is near its final stage of life.
the dense, collapsed, Earth-sized remnant of an intermediate-mass star like the sun.
one possible end point of a star's life. A white dwarf is a star that has collapsed to a dense soup of electrons.
An object in which gravity is balanced by the pressure exerted by densely packed electrons. The object is about the size of the Earth and about as massive as the Sun. It is produced when a low-mass star dies after it runs out of nuclear fuel. How can a star become a black hole
A collapsed star with approximately the mass of the Sun crammed into the size of the Earth.
The hot, dense core of a once-normal star like the Sun. At the end of such a star's life, it can no longer produce the nuclear-fusion reactions that power it. Its outer layers drift away into space, while its core collapses into a ball that is as about as massive as the Sun but no bigger than Earth. This is the fate of stars that do not exceed about four to eight times the mass of the Sun. The Sun will reach this stage in several billion years. A white dwarf spins rapidly, is extremely hot, and may generate a strong magnetic field.
the final step in the evolution of a not very big star, after the consumption of the nuclear fuel in the centre. The name is due to the fact that the star is compact, small and not very bright, but, seeing as it is very hot, it emits "white" light, that is light with small wavelengths.
A small, very dense, star near the end of its life, made mostly of carbon. These faint stars are the remanents of red giant stars after they shed their outer layers when their nuclear cores are depleted. They are about the size of the Earth, but heavier.
A whitish star of high surface temperature and low intrinsic brightness with a mass approximately equal to that of a Sun but with a density many times larger.
A white dwarf is a small, very dense, hot star near the end of its life. It is made mostly of carbon. These faint stars are what remains after a red giant star loses its outer layers. Their nuclear cores are depleted. They are about the size of the Earth (but are heavier). Our Sun will someday turn into a white dwarf. The companion of Sirius is a white dwarf.
White Dwarf is a magazine published by British games manufacturer Games Workshop. Initially dedicated to a variety of role-playing games, the magazine is now dedicated exclusively to the miniature wargames produced by Games Workshop, mainly the core systems of Warhammer Fantasy Battle, Warhammer 40,000 and The Lord of the Rings Strategy Battle Game.
A white dwarf is an astronomical object which is produced when a star of low or medium mass dies. These stars are not heavy enough to generate the core temperatures required to fuse carbon in nucleosynthesis reactions. After such a star has become a red giant during its helium-burning phase, it will shed its outer layers to form a planetary nebula, leaving behind an inert core consisting mostly of carbon and oxygen.