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Limb-darkening corrections for interferometric uniform disc stellar angular diameters
Authors:J Davis  W J Tango  A J Booth†
Institution:Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, Australia
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.
Keywords:techniques: interferometric  stars: atmospheres  stars: fundamental parameters
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