Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268..246b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 268, May 1, 1983, p. 246-249.
Astronomy and Astrophysics
Astrophysics
3
Convective Flow, F Stars, Stellar Models, Stellar Rotation, Stellar Spectra, Angular Velocity, Eddy Viscosity, Stellar Luminosity, Stellar Structure
Scientific paper
It is shown that the discrepancy between Gray's (1982) observations and the Belvedere, Paterno, and Stix (1980, hereafter BPS) predictions of differential rotation for main sequence stars in the spectral region F5-G2 is only apparent. Models of differential rotation are computed for the spectral type and luminosity class stars observed by Gray using the BPS computer code and the rotational velocities given by Gray. The results indicate that a minimum of differential rotation compatible with Gray's measurements in the range F5 V to M0 V is located around the F7 spectral type instead of G5 as previously stated by BPS. These new results are explained on the basis of interaction of rotation with convection, and are discussed in the framework of very recent observations by Woehl (1983).
Belvedere Gaetano
Paterno' Lucio
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