Lithium Abundances in a New Sample of Metal Deficient Dwarfs

Bibcode
1988IAUS..132..507R
Rebelo, R.; Molaro, P.; Beckman, J. E.
Bibliographical reference

The Impact of Very High S/N Spectroscopy on Stellar Physics: Proceedings of the 132nd Symposium of the International Astronomical Union held in Paris, France, June 29-July 3, 1987. Edited by G. Cayrel de Strobel and Monique Spite. International Astronomical Union. Symposium no. 132, Kluwer Academic Publishers, Dordrecht., p.507

Advertised on:
0
1988
Number of authors
3
IAC number of authors
0
Citations
0
Refereed citations
0
Description
The authors have measured the Li abundance in a sample of 37 field dwarfs of low metallicity. Stars with [Fe/H] < -1.4 ("EMD" stars) form a much more homogenous population w.r.t. 7Li than do the stars with somewhat higher metallicities. The authors argue that the warmer EMD stars (6000K < Teff < 6300K) show little Li depletion, and that their asymptotic Li abundance log N(Li) = 2.2 (±0.15) is the best available approximation to a primordial value.
Type
Non-refereed

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