The life of a mixed-up model

Details The life of a mixed-up model The life of a mixed-up model

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213..177d&link_type=abstract

Astrophysical Journal, Part 1, vol. 213, Apr. 1, 1977, p. 177-182.

Astronomy and Astrophysics

Astrophysics

18

Abundance, Convective Heat Transfer, Nuclear Fusion, Stellar Evolution, Stellar Models, Angular Momentum, Carbon Isotopes, Carbon 12, Carbon 13, Linear Equations, Mixing, Nitrogen Isotopes, Oxygen Isotopes, Oxygen 18

Scientific paper

A nucleosynthesis code using an implicit differencing scheme to solve a linear system of equations was used to calculate the effect of different depths of mixing and different time scales on the C-12/C-13 abundance ratios and nitrogen abundance while a star is on the main sequence. Fast mixing can produce an abundance ratio in the range 10 to 20 only by mixing to a thin shell, and no deeper. Slow mixing increases slightly the size of the shell in which the C-13 is enhanced. Mixing below this shell causes significant enhancement of N-14.

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