Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20916509g&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #165.09; Bulletin of the American Astronomical Society,
Other
Scientific paper
We present Li abundances in dwarfs of the old (6-7Gyr) open cluster NGC 188, derived from high signal-to-noise, high resolution (R 15,000) spectra obtained with the Hydra multi-fiber spectrograph on the WIYN 3.5m telescope. These data multiply by a large factor the number of Li observations reported for this cluster. Membership and binarity were evaluated on photometric, proper motion, and radial velocity data. NGC 188 is possibly the oldest open cluster for which Li data exist. A variety of physical mechanisms have been proposed to explain the Li depletion that occurs in F dwarfs during the main sequence. We compare our Li data to various model predictions, and to other star clusters. See also our poster on NGC 188 subgiants (Trentadue et al.). This work is supported by the National Science Foundation grant AST-04-52975 via the REU program at Indiana University.
Croxall Kevin V.
Deliyannis Constantine P.
Gill Amandeep
King Jeremy R.
Trentadue Walter
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