Other
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321..967b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 321, Oct. 15, 1987, p. 967-974.
Other
80
Late Stars, Lithium, Star Clusters, Stellar Spectra, Abundance, Astronomical Catalogs, Atmospheric Models, F Stars, Iron, Metallicity, Stellar Atmospheres
Scientific paper
The F dwarfs in the Hyades cluster show large deficiencies of Li at the temperatures of the middle F stars. Observations have now been made of Li in the A and F dwarfs of the Coma cluster at high spectral resolution (0.1 Å) and high signal-to-noise ratios (180-450) with the coudé spectrograph of the CFH telescope. Abundances of both Li and Fe were determined by a model atmosphere abundance analysis. The two Coma stars that have temperatures in the middle of the Hyades Li "chasm" are very depleted in Li. The Hyades empirical curve seems to fit the Coma stars. The five Am stars show real differences relative to one another in both Li content and "metallic-line-ness". One Am star shows Li enhanced by a factor of 4. If the Coma cluster "initial" Li content is like that of the two late F stars which show the highest Li, it is log N(Li) = 2.9.
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