Astrophysics (index)

Brown Dwarf

(star-like object with less mass than a star)

A Brown Dwarf is a star-like object which has too little mass to sustain Fusion in the manner of main-sequence stars. Their mass is between that of Jupiter and a small star, in the rough range of 10-90 Jupiter masses. They can have Spectral Classes, M-Type Star (M Dwarf), L-Type Star (L Dwarf), T-Type Star (T Dwarf), or Y-Type Star (Y Dwarf).

Brown dwarfs are identified by the observed presence of Lithium and/or Methane. The first observed brown dwarf was identified as such in 1995. As of 2013, hundreds of brown dwarfs were known.

(star type)

Referenced by:
Black Widow Pulsar (B1957+20)
Carbon Planet
Direct Imaging
Epsilon Indi (ε Indi)
Extra Solar Planet
Giant Star
Gliese-Jahreiss Catalog (GJ)
L-Type Star (L)
Planet Formation
Scholz's Star
T-Type Star (T)
Two Micron All-Sky Survey (2MASS)
Ultracool Dwarf
WISE 1506+7027
Y-Type Star (Y)