Abstract
view Abstract Citations (158) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Lithium abundance and age spread in the Pleiades. Duncan, D. K. ; Jones, B. F. Abstract Surface lithium abundance, a parameter which usually decreases with age in late-type stars, has been determined for Pleiades stars as cool as T(e) approximately 4700 K and Hyades stars as cool as T(e) approximately 5000 K. A large abundance spread is seen among the coolest Pleiades stars, consistent with their having been formed over an interval as long as 0.4 x 10 to the 9th yr, several times longer than the nuclear age of the cluster. Observations of the strength of the Ca II H and K line emission in three of the Pleiades stars also indicate a significant spread in age. Some Pleiades stars as cool as T(e) approximately 5200 K have primordial Li abundances, in conflict with the predictions of pre-main-sequence stellar evolution calculations, indicating that such calculations probably overestimate the importance of convection. Publication: The Astrophysical Journal Pub Date: August 1983 DOI: 10.1086/161233 Bibcode: 1983ApJ...271..663D Keywords: Abundance; Lithium; Pleiades Cluster; Star Clusters; Stellar Evolution; Emission Spectra; Line Spectra; Stellar Temperature; Astrophysics full text sources ADS | data products SIMBAD (58)
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