Lithium in the Pleiades and Alpha Persei clusters

Details Lithium in the Pleiades and Alpha Persei clusters Lithium in the Pleiades and Alpha Persei clusters

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...327..389b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 327, April 1, 1988, p. 389-398.

Astronomy and Astrophysics

Astrophysics

92

Abundance, Dwarf Stars, Lithium, Star Clusters, Stellar Spectrophotometry, Stellar Temperature, Charge Coupled Devices, Pre-Main Sequence Stars, Signal To Noise Ratios, Stellar Atmospheres, Stellar Spectra

Scientific paper

The authors have made observations of the Li region in 23 F dwarfs of the Pleiades and α Per clusters. All 21 of the stars in the temperature region 6100 - 7300K show strong Li I lines with values of log N(Li) near 3.0 [where log N(H) = 12.0]. There is no apparent Li dip in the Pleiades Li-temperature profile, although a decrease to log N(Li) ≡ 2.85 near 6500K cannot be excluded. The dramatic decline in surface Li, possibly caused by diffusion or differential rotation, apparently occurs for cluster stars between the ages of ≡5×107 and ≡5×108yr. The authors have determined the [Fe/H] abundances for each of their Pleiades and α Per stars. The mean [Fe/H] for the Pleiades is 0.00±0.05 and for α Per is +0.01±0.07.

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