Open AccessLimb‐darkening corrections for interferometric uniform disc stellar angular diameters
Author(s) -
Davis J.,
Tango W. J.,
Booth A. J.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03701.x
Subject(s) - limb darkening , physics , angular diameter , astrophysics , visibility , interferometry , stellar atmosphere , light curve , angular velocity , stars , angular resolution (graph drawing) , optics , classical mechanics , mathematics , combinatorics
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.