AAS 198th Meeting, June 2001
Session 42. Star Clusters
Display, Tuesday, June 5, 2001, 10:00am-6:30pm, Exhibit Hall

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[42.03] WIYN Open Cluster Study: Metallicity of M35

C.P. Deliyannis, A. Steinhauer (Indiana U.)

M35 is a very rich open cluster whose age, while somewhat uncertain, is likely to be older than that of the Pleiades, possibly by as much as 100 Myr. Perhaps surprising for such a young cluster, previous studies suggest that M35 may be somewhat metal-poor; Barrado et al. (2001) found [Fe/H] = -0.21 +/- 0.10, as compared to the Pleiades' solar metallicity. We independently check this intriguing possibility by presenting abundances derived from WIYN/Hydra spectra of high signal-to-noise (about 200) and high resolution (about 20,000) taken in the lithium 6708 A region (see our M35 lithium poster), in slowly rotating F and G stars of the cluster. This work is supported by NSF Grant AST-9812735.


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