Analysis of the spectra of two solar-like binaries

Details Analysis of the spectra of two solar-like binaries Analysis of the spectra of two solar-like binaries

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001kfnt...17..530l&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, vol. 17, no. 6, p. 530-537

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Procedure and results of Li, Ca, Al, Si, and Fe abundance determinations in the atmospheres of the solar-type components of the binaries HD 6872 A, HD 6872 B and HD 224984, HD 224994 are described. These stars are dwarfs of spectral types G and F. Synthetic spectrum method was used to analyse their spectra. Kurucz's (2000) model atmospheres of metallicities [mu] = 0...-0.2 and the atomic line list VALD veryfied by the solar spectrum are used for computations of the synthetic spectra. Theoretical spectra were fitted to the observed HD 6872 A, HD 6872 B and HD 224984, HD 224994 spectra (lambda/deltalambda = 55000). We determined the same lithium abundances (logN(Li) = 2.3) in the atmospheres of HD 224984 and HD 224994. For HD 6872 A and HD 6872 B we determined different lithium abundances- logN(Li)<1.8, and logN(Li) = 2.6, respectively. For HD 6872 A we determined vsin i = 14 km/s.

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