Abstract
THE simple Cowling model of a star of small mass with a convective core and radiative envelope is of considerable importance in view of Bethe's theory of energy generation, which demands a stellar model of the convective radiative type. It appears possible to use this simple model so as to conform to Bethe's formula of energy generation on one hand and furnish an approximate value of the hydrogen content of a star of small mass on the other. For formulæ relating to the Cowling model we shall refer to Chandrasekhar's "Introduction to the Study of Stellar Structure", pp. 351–54. The constant x0 in Kramers' opacity formula will be taken as 3.9 × 1025 (1 – x2)/t̄, where tmacr; is the mean guillotine factor, and x the hydrogen content; helium content being assumed zero.
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SEN, N., BURMAN, U. Hydrogen Content of the Sun and of Stars of Small Masses. Nature 153, 166–167 (1944). https://doi.org/10.1038/153166b0
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DOI: https://doi.org/10.1038/153166b0
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