Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.220..793t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 220, June 1, 1986, p. 793-797.
Astronomy and Astrophysics
Astronomy
15
Convective Flow, Late Stars, Main Sequence Stars, Mixing Length Flow Theory, Stellar Rotation, Stellar Structure, Stellar Magnetic Fields, Surface Properties
Scientific paper
The key parameter in the mixing-length theory of convection is the ratio of the mixing length to the pressure scale height. It is suggested that surface magnetic fields and rotation both affect the energy transport by convection in such a way that the mixing length can be replaced in the expression for the convective flux by a smaller quantity can be called the effective mixing length. This may have important effects in the comparison of theory with observation. In particular, the effective mixing length in late-type main-sequence star may increase as its rotation rate and magnetic activity decrease.
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