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Lithium in lower-main-sequence stars of the Alpha Persei cluster

1988; IOP Publishing; Volume: 333; Linguagem: Inglês

10.1086/166743

1538-4357

S. Balachandran, David L. Lambert, J. R. Stauffer,

Astrophysics and Star Formation Studies

view Abstract Citations (133) References (40) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Lithium in Lower--Main-Sequence Stars of the alpha Persei Cluster Balachandran, Suchitra ; Lambert, David L. ; Stauffer, John R. Abstract Lithium abundances are presented for main-sequence stars of spectral types F, G, and K in the young open cluster Alpha Per. For 46 cluster members, a correlation between Li abundance and projected rotational velocity v sin i is found: all of the Li-poor stars are slow rotators. Two explanations are proposed to account for the correlation: (1) that the Li depletion is introduced following a rapid spin-down phase experienced by young low-mass stars, and that this episode of Li depletion may be the dominant one determining the spread of Li abundances among young low-mass main-sequence stars, and (2) that star formation has occurred over a finite period such that the older stars have undergone a spin-down and depletion of Li by a means that may or may not depend on rotation. The Li abundance in the warm and rapidly rotating stars appears to be undepleted, as is predicted by recent models of pre-main-sequence stars. The depletion observed in the cool stars exceeds the level predicted by these models. Publication: The Astrophysical Journal Pub Date: October 1988 DOI: 10.1086/166743 Bibcode: 1988ApJ...333..267B Keywords: Lithium; Main Sequence Stars; Open Clusters; Stellar Rotation; F Stars; G Stars; K Stars; Stellar Evolution; Stellar Models; Astrophysics; CLUSTERS: OPEN; STARS: ABUNDANCES; STARS: ROTATION full text sources ADS | data products SIMBAD (13) Related Materials (1) Erratum: 1996ApJ...470.1243B