White Dwarfs

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White Dwarfs

(astronomy), very dense small hot stars consisting of degenerate gas. The mass of an ordinary white dwarf averages about 1, the radius about 0.2, and the luminosity about 0.01 of the corresponding values of the sun. The average density of a white dwarf ranges from 10⁴ to 10⁶ g/cm³. The first white dwarf, a satellite of Sirius (a white star 10,000 times fainter than Sirius), was discovered from the distorted movements of the main star caused by attraction of the satellite. The discovery of dwarf stars confirmed the physical theory which holds that the size of bodies of degenerate gas is inversely proportional to their mass. Dwarf stars are considered the final stage in the evolution of ordinary stars after exhaustion of the thermonuclear sources of energy. They may also be related to pulsars.

A. G. MASEVICH

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No references found			Scientists predict that white dwarfs should have oxygen-rich cores. British scientists locate dead stars by Independent Television News Limited (ITN) Theory suggests that large stars with seven to 10 times the mass of the Sun end their lives either as white dwarfs, or by exploding and collapsing into superdense neutron stars. Expired stars found by Daily Post (Liverpool, England) Bildsten explained that most stars end their lives gently, forming white dwarfs with the mass of the Sun packed into the radius of the Earth. New class of supernova explosion discovered by scientists by Asian News International			white carbon black White Carpathian Mountains white cast iron white cedar white cement white chrysanthemum white clay White Clay Creek Preserve White Clay Creek State Park white cloud white coal white coat white cobalt white compression white copperas white corpuscle White County white cutch white damp White Dead Nettle white deal white diarrhea white dittany white dwarf white dwarf star White Dwarfs white elephant White Emigres White Émigrés White Eye white feldspar White Finns Adventure in Karelia 1921–22 white fir white fish white flag white flytrap white forked flame white frost white garnet White Goddess white gold white goods white graphite White Guards White Hall State Historic Site white hat hacker white heat White Hill, battle of the White Horde White Horse, Vale of the White House			white dhurra white dhurra white diarrhea white dipladenia White Directory Publishers, Inc. White dish white dittany White dog shaker syndrome white dog's-tooth violet white dogtooth violet White Dot Chorioretinopathy White Dot Syndrome White Dove Healing Arts White Dove Release Professionals White Dragon Warriors White Dragons of Bushido White Dryad White Dryas white dura white dura White Dust white dwarf white dwarf white dwarf White dwarf branch stars White dwarf branch stars White Dwarf Evolution Code White Dwarf Luminosity Function white dwarf star white dwarf star White Dwarfs White Dwarves White Dwarves White Eagle Aviation SA White Eagle Red Star White Earth Health Center White Earth Land Recovery Project White Earth Land Settlement Act White Earth Tribal and Community College White Electronic Designs Corp. white elephant white elephant white elephant white elephant White elephant sale White elephants White elephants White elephants white elm White emasculator White Ember Sand Valley White Emigre White emigres White Émigrés White Ensign white ensigns White Entertainment Television White Exponential Noise White Eye white eye calf syndrome White Eye Reflex

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