brown dwarf stars

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• Brown dwarf — Brown dwarfs are sub stellar objects which are too low in mass to sustain hydrogen 1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no… …   Wikipedia

• brown dwarf — n. a hypothetical celestial object consisting of a body of gas that gives off a small amount of radiation but lacks sufficient mass to initiate the nuclear fusion that characterizes true stars …   English World dictionary

• brown dwarf — Astron. a cold, dark star that is too small to initiate the nuclear reactions that generate heat and light. * * * Astronomical object intermediate in mass between a planet and a star. Sometimes described as failed stars, brown dwarfs are believed …   Universalium

• Brown-dwarf desert — A brown dwarf desert is an orbital distance around a star at which brown dwarfs cannot exist as binary stars. [cite book | title = Planet Formation: Theory, Observations, and Experiments | author = Hubert Klahr and Wolfgang Brandner | publisher …   Wikipedia

• brown dwarf — /braʊn ˈdwɔf/ (say brown dwawf) noun an astronomical body which is not of sufficient mass and temperature to produce hydrogen fusion and become a star: *Astronomers found weather similar to that on Jupiter in the atmospheres of brown dwarfs –… …  

• Brown Dwarf —    Bodies that are much larger than planets, but are too small to carry out continuous nuclear fusion in their cores, so they can t become stars …   The writer's dictionary of science fiction, fantasy, horror and mythology

• Dwarf star — The term dwarf star refers to a variety of distinct classes of stars. Dwarf star alone generally refers to any main sequence star, a star of luminosity class V. Red dwarfs are low mass main sequence stars. Yellow dwarfs are main sequence (dwarf)… …   Wikipedia

• Stars and planetary systems in fiction — The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Contents 1 Overview 1.1 The brightest stars …   Wikipedia

• Dwarf planet — Not to be confused with Minor planet. Ceres as seen with the Hubble Space Telescope. It is the only dwarf planet in the asteroid belt …   Wikipedia

• White dwarf — For other uses, see White dwarf (disambiguation). Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint pinprick of light to the lower left of the much brighter Sirius A …   Wikipedia

• List of nearest stars — Artist s conception of a red dwarf star, the most common type of star in the Sun s stellar neighborhood, and in the universe. Although termed a red dwarf, the surface temperature of this star would give it an orange hue when viewed from close… …   Wikipedia