Encyclopedia > E > Effective temperature
Effective temperature
The effective temperature of a star is the temperature of a black body with the same luminosity per surface area (mathcal{F}_{Bol}) as the star and is defined according to the Stefan-Boltzmann law mathcal{F}_{Bol}=sigma T_{eff}^4. Notice that the total (bolometric) luminosity of a star is then L=4 pi R^2 sigma T_{eff}^4, where R is the stellar radius.
Information are taken from Wikipedia, the open encyclopedia, to which contribute many volunteers from around the whole world. Texts are available under the following conditions GNU Free Documentation License.
Encyklopedie (cz) Encyklopédia (sk) Enzyklopädie (de)