# Tag Info

## New answers tagged mass

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### How can the upper limit for a star's mass be calculated?

A basic argument would go something like this: If you assume that the opacity in the star's envelope is dominated by Thomson scattering from free electrons, then it is simple enough to show (e.g. see ...
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You cannot calculate the solar ration of $\mathrm{Fe/H}$ nor can you calculate the logarithmic ratio of iron to hydrogen for a star - both are entities you have to measure. So in order to calculate ...