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...=Hot White Dwarfs in the Extreme-Ultraviolet Explorer Survey. IV. DA White Dwarfs with Bright Companions ...accessdate=2007-04-14 }}</ref> Its companion (IK Pegasi B) is a massive [[white dwarf]]—a star that has evolved past the main sequence and is no longer gen ...

...d Sirius B]] taken by the [[Hubble Space Telescope]]. Sirius B, which is a white dwarf, can be seen as a faint dot to the lower left of the much brighter Si ...iamina Fleming]];<ref name="schatzman" />^{, p.&nbsp;1} the name ''white dwarf'' was coined by [[Willem Luyten]] in 1922.<ref name="holberg" /> ...

...parcos Catalogue]] together with 1,000 low-luminosity stars (red and white dwarfs) from the Gliese Catalogue of Nearby Stars.]] ...now depends on its mass, with stars below 0.23 [[solar mass]]es becoming [[white dwarf]]s, while stars with up to ten solar masses pass through a [[red gian ...

...roxima Centauri have been unsuccessful, ruling out the presence of [[brown dwarfs]] and [[Gas giants|supermassive planets]].<ref name="aaal344"/><ref name=ap | accessdate=2008-08-12 }}</ref> Red dwarfs such as Proxima Centauri are far too faint to be seen with the naked eye; e ...

...ntry for WD 0642-166], ''A Catalogue of Spectroscopically Identified White Dwarfs'' (August 2006 version), G. P. McCook and E. M. Sion ([[Centre de Données a class=A1V (A)<ref name=simbada /> / [[White dwarf|DA2]] (B)<ref name=wd42166 />| ...

...n though stars are generally referred to as being spheres of plasma. White dwarfs will eventually fade into [[black dwarf]]s over a very long stretch of time [[Image:Sirius A and B artwork.jpg|left|thumb|250px|A [[white dwarf]] star in orbit around [[Sirius]] (artist's impression). ''NASA image ...

...m]]s of [[carbon]], [[oxygen]] and [[nitrogen]], respectively; the smaller white spheres represent atoms of [[hydrogen]].]] ...solids. It can also be used to predict the properties of [[star]]s, even [[white dwarf]]s and [[neutron star]]s, since it holds even when [[special relativi ...

...ght [[main sequence]] star roughly twice the Sun's mass and orbited by a [[white dwarf]] called Sirius B. It lies 8.6 light years away. The remaining system ...e evolution of our [[Sun]]. Left: main sequence; middle: red giant; right: white dwarf]] ...

...nterstellar gas in each galaxy is consumed; stars would burn out leaving [[white dwarf]]s, [[neutron star]]s, and [[black hole]]s. Very gradually, collision ...

...about black holes and other dense objects such as neutron stars and white dwarfs, about certain kinds of [[supernova]] implosions, and about processes in th ...mation of galaxies and larger cosmic structures.<ref>Cf. {{Harvnb|Springel|White|Jenkins|Frenk|2005}} and the accompanying summary {{Harvnb|Gnedin|2005}}.</ ...