brown dwarf

(redirected from Methane dwarf)
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brown dwarf

n.
A celestial body that is more massive than a gas giant planet but has insufficient mass to sustain the hydrogen fusion reactions that produce radiant energy in normal stars.

brown dwarf

n
(Astronomy) a type of celestial body midway in mass between a large planet and a small star

brown′ dwarf′


n.
a cold, dark star that is too small to initiate the nuclear reactions that generate heat and light.

brown dwarf

(broun)
A celestial body that is similar to a star but does not emit light because it does not have enough mass to ignite internal nuclear fusion. See Note at dwarf star.
Translations
ruskea kääpiö
barna törpe
brun dverg
brun dvärg
References in periodicals archive ?
The methane dwarf will have cooled to around room temperature, and the white dwarf will have cooled to 2700 Celsius or the temperature of the methane dwarf at the start of its life".
We refer to brown dwarfs with methane absorption features as methane dwarfs or T dwarfs.
In contrast, each of the six new methane dwarfs travels alone in our galaxy.
Two ambitious sky surveys now under way - the Sloan Digital Sky Survey and the Two Micron All Sky Survey - have turned up a half dozen more methane dwarfs. The objects were culled from millions of others on the basis of their unusual colors.