Lithium in late-type giants. III - The weak G band giants

Details Lithium in late-type giants. III - The weak G band giants Lithium in late-type giants. III - The weak G band giants

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..192l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 192-199. Research supported by the Robert A. Welch Fo

Astronomy and Astrophysics

Astrophysics

41

Late Stars, Lithium Isotopes, Metallicity, Red Giant Stars, Stellar Composition, Abundance, Diffusion, Fraunhofer Lines, Nuclear Fusion, Pre-Main Sequence Stars, Stellar Envelopes, Stellar Evolution, Stellar Spectra

Scientific paper

Li abundances are presented for nine different stars to demonstrate that the abundances are consistent with the cosmic value. The observations were made with the coude telescope and echelle spectrometer on La Silla, covering the Li I 6707 A resonance doublet and the 800 A 2-0 band. The survey included the HD stars 18636, 31274, 36552, 40402, 78146 and 82595 and the HR stars 1299 and 4154, all Southern Hemisphere weak Fraunhofer G band objects. Both Li-6 and Li-7 were detected in HR 1299. It is suggested that the Li detected in all the stars convected outward quickly and survived, while C diffused inward and was converted to C-13 and N-14. The Li abundances can be observed in both main sequence and red giant stars.

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