Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....75...73g&link_type=abstract
Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 73-82. Deutsche Forschungsgemeinschaft
Astronomy and Astrophysics
Astrophysics
20
Abundance, Main Sequence Stars, Metallic Stars, Spectrum Analysis, Stellar Spectra, Turbulence, Age Factor, Atmospheric Models, Balmer Series, Chemical Composition, Solar Granulation, Solar Spectra, Stellar Atmospheres, Stellar Luminosity, Stellar Mass, Stellar Structure
Scientific paper
High-dispersion spectra of seven near main sequence stars of MK spectral types F6 to G0 were investigated with differential model atmosphere analyses relative to the sun in order to obtain metal abundances and microturbulence velocities. It is shown that three of the stars hitherto assumed to be metal-rich from photometric narrow-band observations (9 Com, 14 Boo, and o Aql) are only marginally overabundant with respect to the sun, provided their microturbulence is properly taken into account. It is found that all the metal-overabundant stars examined are younger than the sun. Apart from a general metal over or under-abundance, the details of the abundance patterns are the same as in the sun.
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