Stellar effective temperatures and angular diameters determined by the infrared flux method (IRFM): Revisions using improved Kurucz LTE stellar atmospheres

Details Stellar effective temperatures and angular diameters determined by the infrared flux method (IRFM): Revisions using improved Kurucz LTE stellar atmospheres Stellar effective temperatures and angular diameters determined by the infrared flux method (IRFM): Revisions using improved Kurucz LTE stellar atmospheres

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...282..899b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 282, no. 3, p. 899-910

Astronomy and Astrophysics

Astronomy

152

Diameters, Flux (Rate), Infrared Astronomy, Infrared Radiation, Local Thermodynamic Equilibrium, Stellar Atmospheres, Stellar Models, Stellar Temperature, Temperature Measurement, Angular Distribution, Interstellar Extinction, Mathematical Models, Metallicity, Michelson Interferometers, Opacity, Stellar Gravitation, Stellar Radiation

Scientific paper

Infrared flux method (IRFM) determinations of stellar effective temperatures and angular diameters are revised using new Kurucz local thermodynamic equilibrium (LTE) line-blanketed model atmospheres, which more accurately predict the emergent stellar radiation flux than models used previously. An improved method for deriving integrated stellar fluxes is described, together with polynomial coefficients for evaluating them from V and V-K. Tables were given for making small corrections appropiate to changes in log g, metallicity, flux calibration in J, K and L and interstellar extinction, to avoid the need for additional tabular material. The determined temperatures are expressed in terms of V and V-K, giving a mean absolute deviation of 0.53%. A comparison of the derived angular diameters for three stars with determinations using Michelson interferometer shows an average agreement to better than 1%.

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