The ratio of Li-6 to Li-7 in the atmosphere of a carbon star

Details The ratio of Li-6 to Li-7 in the atmosphere of a carbon star The ratio of Li-6 to Li-7 in the atmosphere of a carbon star

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pasp...89...35w&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 89, Feb.-Mar. 1977, p. 35, 36.

Astronomy and Astrophysics

Astronomy

3

Atmospheric Composition, Carbon Stars, Lithium Isotopes, Mass Ratios, Stellar Atmospheres, Abundance, Helium Isotopes, Nuclear Fusion, Spallation, Stellar Spectrophotometry

Scientific paper

The wavelength of the lithium resonance line in the carbon star Y CVn has been measured on seven spectrograms of 10 A/mm dispersion. The mean wavelength is 6707.851 + or - 0.007 A. This implies that the lithium content of the atmosphere of Y CVn is about 10% Li-6, with limits from zero to 20%. The absence or low abundance of Li-6 favors the hypothesis that the lithium in carbon stars is produced by fusion of He-4 and He-3 rather than by spallation of C-13 and N-14.

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