Preferred Name |
T dwarfs |
Synonyms |
T brown dwarfs |
Definitions |
A type of brown dwarf with an effective temperature between about 1200 K and 500 K, i.e. colder than the preceding type L dwarf. The spectra of T dwarfs are characterized by the presence of methane bands in the near infrared. The presence of these bands, broad H_{2}O features, and H_2 collision-induced absorption radically alter the spectral energy distributions of T dwarfs compared to a black body at the same temperature. Hence near-infrared colors become increasingly blue (J - K ~ 0) as compared to L dwarfs. The first T dwarf, called Gl 229B, was discovered by Nakajima et al. The spectral classification scheme (subtypes T0 to T9) currently used was defined by Burgasser et al. |
ID |
http://astrothesaurus.org/uat/1679 |
altLabel |
T brown dwarfs T-type brown dwarfs T dwarf stars |
broader |
http://astrothesaurus.org/uat/185 |
contributor | |
definition |
A type of brown dwarf with an effective temperature between about 1200 K and 500 K, i.e. colder than the preceding type L dwarf. The spectra of T dwarfs are characterized by the presence of methane bands in the near infrared. The presence of these bands, broad H_{2}O features, and H_2 collision-induced absorption radically alter the spectral energy distributions of T dwarfs compared to a black body at the same temperature. Hence near-infrared colors become increasingly blue (J - K ~ 0) as compared to L dwarfs. The first T dwarf, called Gl 229B, was discovered by Nakajima et al. The spectral classification scheme (subtypes T0 to T9) currently used was defined by Burgasser et al. |
modified |
2021-09-27T15:42:06.537Z 2020-11-04T19:46:01.009Z |
prefLabel |
T dwarfs T dwarves |
Delete | Mapping To | Ontology | Source |
---|---|---|---|
http://www.ivoa.net/rdf/uat#t-dwarfs | IVOA_UAT | LOOM |