How is stellar luminosity generally related to stellar mass ($M$) according to the steep power law approximation?

Answer

$L \propto M^{3.5}$ or greater

The relationship between mass and luminosity is not linear; it often follows a steep power law, frequently approximated as luminosity being proportional to mass raised to the power of 3.5 or greater.

How is stellar luminosity generally related to stellar mass ($M$) according to the steep power law approximation?
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