Semiempirical upper photosphere models - The sun /G2 V/ and Procyon /F5 IV-V/

Astronomy and Astrophysics – Astrophysics

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Atmospheric Models, Photosphere, Radiative Heat Transfer, Solar Atmosphere, Stellar Atmospheres, Astronomical Models, Emission Spectra, K Lines, Late Stars, Stellar Temperature

Scientific paper

A description is presented of an approach for developing a model of the average upper photosphere temperature structure of a late-type star. The approach makes use of the frequency dependence of the damping wing opacity of a strong resonance line. Difficulties related to a dependence on uncertain constant and parameter values are to be overcome with the aid of a 'calibration' relative to a solar photosphere model obtained by an independent method.

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