Luminosity

From Aetilc

Luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the square of the radius and the fourth power of the absolute surface temperature. The sun is a medium-sized star with a luminosity of 3.8×1033 ergs per sec. The luminosities of other stars are commonly expressed in terms of the sun's luminosity. The known luminosities of stable stars range from about 1/1,000,000 that of the sun for a relatively cool white dwarf to about 1,000,000 times that of the sun for the hottest known supergiant star.

In world building, a stars luminosity may be expressed by this equation:

L = M^3.5

where: M is the mass of star relative to the sun.

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