K subgiant stars
type: Concept
broader: K stars

K subdwarf stars
type: Concept
broader: K stars

K giant stars
type: Concept
broader: K stars

Stellar classification
type: Concept
related: K stars

K supergiant stars
type: Concept
broader: K stars

K stars
type: Concept
alternative label: Class K stars
alternative label: K-type stars
contributor: AAS Frey.Katie Admin
broader: Late-type stars
broader: Stellar spectral types
modified: 2020-11-03T16:25:00.459Z
modified: 2020-11-03T16:24:45.841Z
narrower: K dwarf stars
narrower: K subgiant stars
narrower: K giant stars
narrower: K supergiant stars
narrower: K subdwarf stars
related: Stellar classification
definition: 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.

Late-type stars
type: Concept
narrower: K stars

Stellar spectral types
type: Concept
narrower: K stars

K dwarf stars
type: Concept
broader: K stars