Abundances of chemical elements in the atmospheres of K giants

Details Abundances of chemical elements in the atmospheres of K giants Abundances of chemical elements in the atmospheres of K giants

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sva....24..323k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 57, May-June 1980, p. 557-565.) Soviet Astronomy, vol. 24, May-June 1980, p. 323-328. Translati

Astronomy and Astrophysics

Astronomy

3

Abundance, Giant Stars, K Stars, Stellar Atmospheres, Stellar Evolution, Absorption Spectra, Heavy Elements, Open Clusters, Spectral Line Width, Stellar Structure

Scientific paper

The atmospheres of the giant stars of the spectral class KO III belonging to the Hyades cluster, NGC 752, M 25, and UMa, are investigated with emphasis placed on differences in the abundances of chemical elements. A modified method of differential curves of growth for determining the actual abundances of chemical elements is presented. The characteristic abundances of stars belonging to different open clusters are found to be the same within the limits of the measurement errors, and close to the abundances in the solar atmosphere. An excess of heavy elements of the iron group in the atmospheres of the stars N 213 and HD 170820 is examined. Values of the degree of ionization are estimated using model atmospheres and effective depths of formation of atomic absorption lines.

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