white dwarf star


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to white dwarf star: red dwarf star

white dwarf star

[′wīt ¦dwȯrf ′stär]
(astronomy)
An intrinsically faint star of very small radius and high density; the mass is about 0.6 that of the sun and the average radius is about 5000 miles (8000 kilometers); it is one final stage of stellar evolution with thermonuclear energy sources extinct.
References in periodicals archive ?
Like the sun, a red giant, runs out of fuel forming white dwarf stars.
Type 1a supernovas occur after a white dwarf star gains weight, probably from eating material shed by a companion star.
The white dwarf star is in the constellation Virgo, 463 light years from e arth.
The white dwarf star captures some of this gas, which accumulates on the surface of the star.
As the red giant ages it further cools off and eventually becomes a white dwarf star.
It consists of a white dwarf star in close orbit with a much larger red giant star.
It looks,as you would expect,like two dark patches that make up its eyes and a bright central white dwarf star to serve as a beak.
It is named for a White Dwarf Star, a small and extremely dense star.
Tim O'Brien of The University of Manchester's Jodrell Bank Observatory, one of the international team of astronomers who worked on the study, explains, "A nova occurs when gas from a companion star falls onto the surface of a white dwarf star in a binary system.
Modern astronomers know that the event Tycho and others observed was a Type Ia supernova, caused by the explosion of a white dwarf star.
It now exists as a white dwarf star within an expanding shell of gas.
0, which is named for a White Dwarf Star, a small but extremely dense star.