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T dwarf

A Dictionary of Astronomy | 1997 | 363 words | Copyright

T dwarf A spectral classification applied to brown dwarfs at the very bottom end of the main sequence, cooler and fainter even than the L dwarfs. They have temperatures from about 1300 to 800 K or even cooler, and their spectra show strong infrared absorption bands due to methane and water. Being so cool, they are detectable only at infrared wavelengths.

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