Limb-darkening corrections for interferometric uniform disc stellar angular diameters
★ E-mail: [email protected]
† Present address: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
1 The limb-darkening corrections for the Kurucz models are available from the authors. Requests should be sent to [email protected].
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.
