Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....96..189b&link_type=abstract
Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 189-192. Research supported by the Swiss National Science Foundatio
Astronomy and Astrophysics
Astrophysics
2
Abundance, Atmospheric Models, Binary Stars, Main Sequence Stars, Spectrum Analysis, Stellar Atmospheres, Stellar Spectra, Iron, Line Spectra, Spectral Line Width, Stellar Gravitation, Stellar Motions, Stellar Temperature
Scientific paper
Model atmospheres of main-sequence stars (effective temperatures of 5000 to 8500 K) were used to compare composite equivalent widths of selected Fe I and Fe II lines, for synthetic binaries differing by 500 K and 1000 K in effective temperature. The composite equivalent widths were analyzed as if they arose from a single star. The resulting effective temperatures, gravities, iron abundances and microturbulent velocities were derived. The main effect of an unresolved duplicity is an underestimation of the gravity. Known or suspected binaries should therefore not be included in spectroscopic sample stars.
Barambon C.
Jousson M.
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