Chandrasekhar's book on stellar structure

I'm reading and enjoying S.Chandrasekhar's book on stellar structure (Dover).
I just finished the chapter on the Hertzsprung-Russell diagram and noted that
at the time he wrote the book (around 1939) there was no good theory of
the transmutation reactions taking place inside the star. I was just wondering
what I should read that would bring the material in that chapter up to date,
if not the book itself.

Ignorantly,
Allan Adler


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