STELLAR EFFECTIVE TEMPERATURES AND ANGULAR DIAMETERS DETERMINED BY THE INFRARED FLUX METHOD (IRFM) - REVISIONS USING IMPROVED KURUCZ LTE STELLAR ATMOSPHERES

Infrared flux method (IRFM) determinations of stellar effective temper atures and angular diameters are revised using new Kurucz LTE line-bla nketed model atmospheres, which more accurately predict the emergent s tellar radiation flux than models used previously. An improved method for deriving integrated stellar fluxes is described, together with pol ynomial coefficients for evaluating them from V and V - K. Tables are given for making small corrections appropriate to changes in log g, me tallicity, flux calibration in J, K, and L and interstellar extinction , to avoid the need for additional tabular material. The determined te mperatures are expressed in terms of V and V - K, giving a mean absolu te deviation of 0.53%. A comparison of the derived angular diameters f or three stars with determinations using Michelson interferometer show s an average agreement to better than 1%.