The nitrogen abundance in the atmospheres of single and binary stars

Details The nitrogen abundance in the atmospheres of single and binary stars The nitrogen abundance in the atmospheres of single and binary stars

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65..827l&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, July-Aug. 1988, p. 827-836. In Russian.

Astronomy and Astrophysics

Astronomy

5

Atmospheric Composition, Binary Stars, Nitrogen, Stellar Atmospheres, Line Spectra, Stellar Models

Scientific paper

The nitrogen abundances for 47 single, 11 visual double, and 41 close binary stars are obtained from high-dispersion Wlambda determinations of nitrogen lines using atmospheric models and theoretical calculations of N II lines, taking LTE errors into account. The mean value of lg N(N) is found to be 8.05 for single stars, 8.50 for close binaries, and 8.15 for visual double stars. A correlation is found between the nitrogen abundance and the helium and carbon abundances. It is suggested that considerable mixing between the central part of stars and the atmosphere occurs in binary stars.

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