WIYN Open Cluster Study 5. Lithium Depletion and Metallicity in G and K Dwarfs of the Open Cluster M35

Abstract

We present an analysis of high quality spectra of members of the young cluster M35. By using a multi-fiber spectrograph, we are able to collect high signal-to-noise, high resolution spectra of a sample of photometric candidate members. Accurate radial velocities are used to establish the membership status and rotational velocities are measured using cross-correlation. We also derive the metal content of the cluster, [Fe/H]= -0.21$\pm$0.10, based on spectral synthesis. Finally, we derive the lithium abundances of the bona fide cluster members and compare the results with members of other clusters. For example, M35 shows a smaller range in both rotation rates and lithium abundances as compared to the Pleiades. We discuss possible roles of various parameters. Our high quality M35 database of lithium abundances and rotational velocities are perfectly suited to be used as a laboratory to test theoretical models dealing with the lithium depletion phenomenon.

Accepted ApJ (Feb 20, 2001 issue)

References in corpus (1)

• From the Top to the Bottom of the Main Sequence: A Complete Mass Function of the Young Open Cluster M35

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