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. 2014.

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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 — brown′ dwarf′ n. astron. a cold, dark star that is too small to initiate the nuclear reactions that generate heat and light …   From formal English to slang

  • 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 — /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 –… …   Australian English dictionary

  • brown dwarf — noun Date: 1978 a celestial object that is much smaller than a normal star and has insufficient mass to sustain nuclear fusion but that is hot enough to radiate energy especially at infrared wavelengths …   New Collegiate Dictionary

  • brown dwarf — noun A star that is typically about the volume of the planet Jupiter, which has mass approaching that of a star, but insufficient to ignite its elements and cause it to burn as a true star, except that of deuterium …   Wiktionary

  • brown dwarf — noun Astronomy a celestial object which is intermediate in size between a giant planet and a small star, believed to emit mainly infrared radiation …   English new terms dictionary

  • brown dwarf — noun : a celestial object that is much smaller than a normal star and has insufficient mass for nuclear fusion to begin but that is hot enough to radiate energy especially at infrared wavelengths …   Useful english dictionary

  • 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

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