Synthetic spectra and abundances of elements in the atmospheres of F-K stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The problems of determining the abundances of elements in the atmospheres of F-K stars by the synthetic spectrum method are discussed. The algorithm used is based on the minimization of differences of the residual fluxes rν = Fν/{Fνcont} in observed and synthetic spectra. It is realized in the program AB deg L8 and is suitable for a wide range of astrophysical tasks. Results of the use of the procedure for modeling λλ 669-672 nm in the spectra of the Sun (G2 V) and the fast rotating (V{sin}i = 90 km/s) red dwarf (K2 V) from the system V471 Tau are presented.

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