A brown dwarf is a type of stellar classification describing a type of sub-stellar planetary object that is at the bottom threshold of sustaining reaction necessary to be considered an actual star. Despite the object's description as a variety of dwarf star, it can technically also be defined in some conventions of science and astronomy as a gas giant or rogue planet.
History and specifics
Brown dwarf stars continually grow cooler during their existence. Despite the abundance of such stars, more common than main sequence stars, it was rare to find intelligent life in brown dwarf systems. (TLE novel: The Buried Age)
In the year 2152, the United Earth Starfleet starship Enterprise NX-01 planned to investigate a brown dwarf's star system. The ship's investigation was interrupted when the NX-01 was infested by a symbiotic lifeform. (ENT episode: "Vox Sola")
The abundance of the element dysprosium in a brown dwarf star was different than regular stars, when factored with terbium, holmium, erbium, and europium, according to an impromptu scientific dissertation given by Data in 2365. (TNG episode: "Manhunt")
In 2367, the USS Enterprise-D made way for a nearby brown dwarf, intending to use its mass to help create a gravitational catapult effect to deflect a mirror universe invasion out of the primary universe. (TNG novel: Dark Mirror)
The Solanae Dyson Sphere, constructed by the Solanae roughly concurrent with the fall of the Iconian Empire, 200,000 years prior to the 25th century, was centered around a brown dwarf the was part of the Delta Solanae system in the galaxy's Delta Quadrant. Originally, the star was of a different type, transformed into a brown dwarf due to a large-scale industrial accident, which swamped the Dyson sphere with tetryon radiation, forcing the inhabitants to abandon this place. (STO video game: Star Trek Online)
|By class and type||class O blue-violet star • class B blue star • class A blue-white star • class F white star (white dwarf) • class G yellow star (yellow dwarf • yellow giant) • class K orange star (orange giant) • class M red star (red dwarf • red giant) • boson star • brown dwarf • green star • N-type star • R-type star • S-type star • D-type star|
|By size or makeup||black hole/black star • carbon star • dwarf star (brown dwarf • red dwarf • white dwarf • yellow dwarf) • giant star (blue giant • red giant • orange giant • yellow giant) • Lazarus star • microstar • neutron star (collapsar • magnetar • pulsar) • protostar • supergiant star • variable star • white hole • Wolf-Rayet star|
- ENT episode: "Vox Sola"
- TNG episode: "Manhunt"
- TLE novel: The Buried Age
- Decipher RPG module: Starships
- Decipher RPG module: Worlds
- TNG novel: Dark Mirror
- TTN novel: Orion's Hounds
- ST - Prey novel: The Hall of Heroes
- STO video game: Star Trek Online