Supermetallicity and the strong-lined binary systems

Details Supermetallicity and the strong-lined binary systems Supermetallicity and the strong-lined binary systems

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84..839d&link_type=abstract

Astronomical Journal, vol. 84, June 1979, p. 839-856.

Other

17

Abundance, Binary Stars, Giant Stars, K Stars, Main Sequence Stars, Metallic Stars, Stellar Atmospheres, Astronomical Models, Cosmology, Galactic Evolution, Gravitational Effects, Heavy Elements, Hydrogen

Scientific paper

The present discussion deals with visual binary systems that contain a strong-CN K giant and a strong-lined main sequence companion. It is argued that enhancement of the blue CN bands is associated with genuine supermetallicity, rather than with an overabundance of nitrogen. The arguments for supermetallicity are based on the principle, according to which two noninteracting stars of common origin and of greatly differing temperatures and surface gravities are unlikely to be affected in the same way by any agent that spuriously increases line strengths, other than the simple possibility of genuine heavy-element overabundance relative to hydrogen.

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