The intrinsic colour calibration of Stromgren photometry for F-type stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Astronomical Photometry, Calibrating, F Stars, Stellar Color, Stellar Spectrophotometry, Abundance, Interstellar Extinction

Scientific paper

Several calibrations of Strömgren uvby-β photometry with respect to the intrinsic colour (b-y)0 exist for F-type stars. These calibrations are complementary, since they are valid for different ranges of heavy element abundance. A new comprehensive intrinsic colour calibration is presented. It is valid for all F0-G2 stars of luminosity classes III-V, except possibly the most extreme population II stars. The calibration is based on 1231 stars. The rms scatter around the calibration is 0m.009 (one star).

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