Lithium Abundance of Metal-poor Stars

Details Lithium Abundance of Metal-poor Stars Lithium Abundance of Metal-poor Stars

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..453z&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, No. 5, p. 453-457

Astronomy and Astrophysics

Astrophysics

5

Stars: Abundances, Stars: Population Ii, Galaxy: Evolution

Scientific paper

High-resolution, high signal-to-noise ratio spectra have been obtained for 32 metal-poor stars. The equivalent widths of Li λ6708Å were measured and the lithium abundances were derived. The average lithium abundance of 21 stars on the lithium plateau is 2.33±0.02 dex. The Lithium plateau exhibits a marginal trend along metallicity, dA(Li)/d[Fe/H] = 0.12±0.06, and no clear trend with the effective temperature. The trend indicates that the abundance of lithium plateau may not be primordial and that a part of the lithium was produced in Galactic Chemical Evolution (GCE).

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