Luminosity of a Star
Description
In astronomy, luminosity is the total amount of energy emitted by a star, galaxy, or other astronomical object per unit time. It is related to brightness, which is the luminosity of an object in a given spectral region.
It has been shown that the luminosity of a star (assuming the star is a black body, which is a good approximation) is also related to temperature and radius of the star by the equation shown.
Variables
L | Luminosity (W) |
π | pi |
R | radius of the star (m) |
σ | Stefan-Boltzmann constant |
T | Temperature of the star (K) |