The nitrogen to hydrogen abundance in main sequence B-type stars

Details The nitrogen to hydrogen abundance in main sequence B-type stars The nitrogen to hydrogen abundance in main sequence B-type stars

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194...85d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 194, Jan. 1981, p. 85-93. Research supported by the Science Research Co

Astronomy and Astrophysics

Astronomy

35

Abundance, B Stars, H Lines, Main Sequence Stars, Nitrogen, Stellar Spectra, Atmospheric Models, Atmospheric Turbulence, Error Analysis, Fine Structure, Line Spectra, Spectral Line Width

Scientific paper

Observed equivalent widths for N II lines in the spectra of approximately 30 B-type stars have been analyzed using non-LTE model atmosphere calculations. The multiplets considered are numbers 3, 4, 5, 12, 15, and 55, and the observational data are principally from high dispersion echelle spectrograms. A zero microturbulence is found to be appropriate, and a nitrogen to hydrogen abundance of 7.9 plus or minus 0.1 dex is deduced in excellent agreement with the current solar value.

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