brown dwarf

(redirected from T dwarf)
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Related to T dwarf: Failed star

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 ?
Shown here (left to right) are the Sun (facing page), a low-mass M dwarf star, an L dwarf, a T dwarf, a Y dwarf, and Jupiter, plotted to scale.
T dwarfs: Middle-aged and cooler, these failed stars come in around 1200 K (1700[degrees]F) and have methane in their atmospheres.