Limb-darkening corrections for interferometric uniform disc stellar angular diameters |
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Authors: | J. Davis,W. J. Tango, A. J. Booth&dagger |
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Affiliation: | Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, Australia |
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Abstract: | Stellar angular diameters determined interferometrically are generally established by fitting the observed visibility data with a curve appropriate for a uniformly illuminated disc. The resulting uniform-disc diameters must be corrected for the effects of limb darkening in order to determine the true angular diameters of the stars. An extensive grid of limb-darkening corrections, based directly on the centre-to-limb intensity variations for Kurucz model stellar atmospheres, has been computed without the intermediate step of a parametrized representation of the centre-to-limb variation. The limitations of this method of correction are discussed. |
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Keywords: | techniques: interferometric stars: atmospheres stars: fundamental parameters |
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