Gravitational Darkening Coefficients of the Stars in the Semidetached Binary V Puppis

Details Gravitational Darkening Coefficients of the Stars in the Semidetached Binary V Puppis Gravitational Darkening Coefficients of the Stars in the Semidetached Binary V Puppis

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005arep...49..102a&link_type=abstract

Astronomy Reports, vol. 49, Issue 2, p.102-108

Astronomy and Astrophysics

Astronomy

Scientific paper

We have analyzed high-precision vby light curvesfor the semi-detached binary V Pup in a Roche model. They are consistent with the standard gravitational darkening coefficient for hot stars, β = 0.25, rather than the value β = 1.36 ± 0.04 derived by Kitamura and Nakamura [1] using a simpler model. We rigorously estimate the confidence intervals for the allowed gravitational darkening coefficients for a star filling its Roche lobe to be β = (-0.24, +1.29) for the 99% confidence level and β = (-0.21, +1.26) for the 67% confidence level.

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