(small, cool main-sequence star)
A red dwarf is a small main sequence star, generally an M-type star
Sometimes the term is used to include K-type stars (K dwarfs),
but those can be referred to as orange dwarfs.
The mass range is from 0.075 to about 0.5 solar mass.
The surface temperature is 2000-4000 K.
Red dwarfs make up about 75% of the stars in the Milky Way,
and many of the nearest stars are red dwarfs. They have become
of interest in the search for habitable extra-solar planets because
there are so many (thus, as a group, they host many planets),
so many are close (allowing planet study),
and their relative dimness is conducive to direct imaging of the planets.
Red dwarf examples:
Referenced by pages:
AD Leonis (AD Leo)
Alpha Centauri (α Centauri)
California-Kepler Survey (CKS)
Deep Multicolor Survey (DMS)
Gliese-Jahreiss Catalog (GJ)
Gliese 436 b (GJ 436 b)
HD 189733 b
L-type star (L)
LHS 3844 b
low mass star (LMS)
main sequence star (MS)
M-type star (M)
MEarth Project (MEarth)
rare designator prefixes
red-giant branch (RGB)
TOI 700 d