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Lithium in the Hyades Cluster
Boesgaard, A. M.; Tripicco, M. J.
AA(Hawaii, University, Honolulu), AB(Hawaii, University, Honolulu)
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 302, March 15, 1986, p. L49-L53. (ApJL Homepage)
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NASA/STI Keywords:
Lithium, Main Sequence Stars, Star Clusters, Stellar Composition, Abundance, Metallicity
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Twenty F dwarfs in the Hyades Cluster have been observed for Li content with the CFH telescope and the UH 2.2 m telescope at high spectral resolution and high signal-to-noise ratios. Abundances have been determined for Li/H and Fe/H from a standard model atmosphere abundance routine. There is a remarkable variation of Li/H with stellar surface temperature: stars with Teff near 6600K show Li depletions by factors >100 relative to stars 300K hotter and cooler. The hottest stars (T > 7000K) show Li/H values of 10-9, the maximum observed in F field stars, meteorites, T Tauri stars, etc.

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