Red giant: Difference between revisions

{{other uses}}

{{short description|Large cool stars that have exhausted their core hydrogen}}

A '''red giant''' is a luminous [[giant star]] of low or intermediate mass (roughly 0.3–8 [[solar mass]]es ({{Solar mass|link=y}})) in a late phase of [[stellar evolution]]. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around {{convert|5000|K|C F|sigfig=2}} or lower. The appearance of the red giant is from yellow-orange to red, including the [[stellar classification|spectral types]] K and M, but also [[S-type star|class S stars]] and most [[carbon star]]s.