Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..89...15c&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 89, no. 1, Jan. 1983, p. 15-32. Research supported by the American Astrono
Astronomy and Astrophysics
Astrophysics
15
Astronomical Photometry, Early Stars, Eclipsing Binary Stars, Ubv Spectra, B Stars, Computer Programs, Limb Darkening, Orbital Elements, Stellar Luminosity, Tables (Data)
Scientific paper
The observations of VV Ori in UBV and in uvby obtained by Chambliss in 1975-1979 are reanalyzed using an updated version of the WINK program of Wood (1971, 1972). Several solutions are obtained using the normal points. These establish fairly reliable values for the linear limb-darkening coefficient of VV Ori A and approximate values for the luminosity of this system's third component. Attempts to determine nonlinear coefficients of limb darkening for the primary component, however, are unavailing. Solutions are also obtained using all observations. Extremely close agreement is obtained between the values of the geometric elements determined from these solutions and those determined using the normal points only. The solutions based on all observations produce reliable values for the limb-darkening coefficient of VV Ori A, typically 0.30 + or - 0.04. It is noted that these results are in good agreement with theoretical limb darkening coefficients derived from model atmosphere calculations.
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