Determination of abundances in atmospheres of F-, G-, K-dwarfs

1Pavlenko, YV
1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2017, 33(2):24-36
Start Page: Physics of Stars and Interstellar Medium
Language: Russian

Algorithm of the determination of the chemical composition of stars of spectral classes F, G, K using fits to the observed lines or selected parts the blended lines. The technique allows us to determine the parameters atmosphere, i.e. acceleration of gravity, microscopic turbulence speed, the rotation speed of the star, and the content of elements for a given effective temperature of the star. At each stage of the iterative process the atmosphere model calculated for the new set of input data. The results of the application of the procedure for the analysis of the spectra of the Sun (G2 V) and HD 101348 (G3 V) are discussed.

Keywords: atmospheric parameters, chemical composition, dwarfs

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