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Convective Overshooting in Main Sequence Models

Published online by Cambridge University Press:  25 April 2016

Bruce C. Cogan
Bruce C. Cogan*
Affiliation:
Mount Stromlo and Siding Spring Observatory, Research School of Physical Sciences, Australian National University
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Extract

In calculating models of stellar interiors convection is almost always treated by assuming that it is present if and only if the Schwarzschild criterion is satisfied. It seems possible that this oversimplifies the actual situation. In particular convective motions may overshoot beyond the formal boundary of the convective core, as given by the Schwarzschild criterion. The principal result of such overshooting would be the mixing of additional material into the core. This sort of additional mixing has been considered by Maeder (1974) and by Prather and Demarque (1974) in relation to the evolution of stars away from the main sequence in old open clusters.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 6 , October 1975 , pp. 355 - 356
Copyright
Copyright © Astronomical Society of Australia 1975

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References

Maeder, K., Astron. Astrophys., 32, 177 (1974).Google Scholar
Prather, M.J., and Demarque, P., Astrophys. J., 193, 109 (1974).Google Scholar
Shaviv, G., and Salpeter, E.E., Astrophys. J., 184, 191 (1973).Google Scholar