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The property of a star upon which all other things depend (for a given
chemical composition, no rotation, no magnetic fields) is the Mass of the
star. Let's see how the properties of a star depend upon its mass.
- Recall that the central pressure of a star is roughly given by P ~
GM**2/R**4. For a star like the Sun which is dominated by normal
gas pressure, P = N k T ===> the central temperature of a star is
roughly given by T ~ M/R. So, for stars like the Sun, as M increases, T
increases (a complaint should be that we never said anything about the radius.
We find that the radius increases with M but not as fast as R ~ M ===> T
can depend on M less strongly than T ~ M, but it still increases with M).
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