This is a list of exceptional white dwarf stars. An extensive database of all known white dwarfs and their properties is available in the Montreal White Dwarf Database. [1]

White dwarfs are stellar remnants produced when a star with around 8 solar masses or less sheds its outer layers into a planetary nebula. The leftover core becomes the white dwarf. It is thought that white dwarfs cool down over quadrillions of years to produce a black dwarf.

The first white dwarf discovered was in the triple star system of 40 Eridani, which contains the relatively bright main sequence star 40 Eridani A, orbited at a distance by the closer binary system of the white dwarf 40 Eridani B and the main sequence red dwarf 40 Eridani C.

White dwarfs are degenerate stars at the end of their lifetime...our Sun will become a white dwarf at the end of its lifetime. Here are the brightest white dwarf stars in the night sky. A couple can even be seen with a large amateur telescope.

Oct 22, 2024 · After a red giant has shed all its atmosphere, only the core remains. Scientists call this kind of stellar remnant a white dwarf. A white dwarf is usually Earth-size but hundreds of thousands of times more massive. A teaspoon of its material would …

Apr 17, 2025 · White dwarf star, any of a class of faint stars representing the endpoint of the evolution of intermediate- and low-mass stars. White dwarf stars are characterized by a low luminosity, a mass on the order of that of the Sun, and a radius comparable to that of Earth.

This database table lists all white dwarf stars, both previously-cataloged and newly discovered, which have been detected in the ROSAT All-Sky Survey. The positions and count rates of the X-ray sources associated with each star are given, as well as spectral types and other star names for those stars which have been previously cataloged.

White dwarf luminosity function; Timeline of white dwarfs, neutron stars, and supernovae

White dwarfs are the hot, dense cores left behind by stars that initially had masses between 0.5 and 8 times that of the Sun during their main sequence phase. These remnants themselves contain between 0.2 and 1.44 solar masses, all compressed into a size roughly comparable to an Earth-like planet.

Apr 25, 2023 · White dwarfs are the hot, dense remnants of long-dead stars. They are stellar cores, left behind when stars exhaust their fuel supplies and blow their gases into space.