Source: wikibot/faber-jackson-relation
= Faber–Jackson relation
{wiki=Faber–Jackson_relation}
The Faber–Jackson relation is an empirical relationship in astrophysics and cosmology that describes the correlation between the luminosity of a galaxy and the velocity dispersion of its stars, particularly in elliptical galaxies. This relation suggests that brighter galaxies tend to have a higher velocity dispersion, which is a measure of how fast the stars within the galaxy move.