The gravity-darkening of the main-sequence components of spectral types A, F and G in detached close binary systems

Details The gravity-darkening of the main-sequence components of spectral types A, F and G in detached close binary systems The gravity-darkening of the main-sequence components of spectral types A, F and G in detached close binary systems

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ssrv...50..353n&link_type=abstract

Space Science Reviews, Volume 50, Issue 1-2, pp. 353-353

Computer Science

1

Scientific paper

From analysis of the photometric ellipticity effect in seven well-understood detached close binary systems, empirical values of the exponent α of gravity-darkening have been practically deduced for eleven main-sequence components of spectral types A, F and G which should cover the range of structural change (from radiative to convective) in stellar atmospheres. The result indicate that values of the exponent diminish gradually with decreasing effective temperatures from α ˜ 1.0 for radiative atmospheres with T > 8500 K to α = 0.2 ˜ 0.3 for convective atmospheres with T < 6500 K, in spite of some uncertainty in the reflection correction process.

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