AAS 196th Meeting, June 2000
Session 42. Open Clusters
Display, Wednesday, June 7, 2000, 10:00am-7:00pm, Empire Hall South

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[42.10] WIYN Open Cluster Study: Metallicity of NGC 2451

S. J. Margheim (Indiana University), J. R. King (University of Nevada, Las Vegas), C. P. Deliyannis (Indiana University), I. Platais (Yale University / Universities Space Research Association)

We have studied high-S/N (~200/pixel) high resolution (R ~ 20,000 ~ 2.5 pixels) WIYN/Hydra spectra of the Li region in proper-motion-selected solar-type main sequence members of the young (~ 100 Myr) open cluster NGC 2451, for the purpose of determining the cluster's metallicity. Previously, this cluster has been thought to be significantly metal-poor, about 1/3-solar. Instead, we find that it is slightly super-solar, near the Hyades metallicity. Reasons for this difference and implications are discussed.


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