K subgiant stars
K subdwarf stars
K giant stars
Stellar classification
K supergiant stars
Class K stars
K-type stars
Late-type stars
Stellar spectral types
K dwarf stars
An orange-red star of spectral type K with a surface temperature of about 3600-5000 K. The spectra of K stars are dominated by the H and K lines of calcium and lines of neutral iron and titanium, with molecular bands due to cyanogen (CN) and titanium dioxide (TiO). Examples are Arcturus and Aldebaran.
K stars