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S. J. Margheim, C. P. Deliyannis (Indiana Univ.), D. Barrado y Navascues (Laboratorio de Astrofísica Espacial y Física Fundamental), J. R. Stauffer (Harvard-Smithsonian Center for Astrophysics)
The Pleiades cluster has been fundamental for helping to improve our understanding of physical processes occurring in the stellar interior. The large apparent spreads in the observed lithium (Li) abundances in Pleiads of fixed Teff, and the spreads' possible relationship to rotation rate has remained a problem for several years. Armed with high-resolution, high S/N spectra from the HYDRA multi-object spectrograph at the WIYN telescope and improved abundance determination methods (spectrum synthesis and curve-of-growth), we present new Li abundances for a large number of Pleiades cluster members. The impact of these results on the Li-rotation problem and comparisons to previous studies are discussed. This project falls under the auspices of the WIYN Open Cluster Study (WOCS), a collaboration between Indiana University, Yale University, the University of Wisconsin, and the National Optical Astronomical Observatories (NOAO). This work is supported by the National Science Foundation under grant AST-0206202.
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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.