Lithium abundances in the atmospheres of SLR C--giants WZ Cas and WX Cyg from resonance and subordinate Li I lines

Details Lithium abundances in the atmospheres of SLR C--giants WZ Cas and WX Cyg from resonance and subordinate Li I lines Lithium abundances in the atmospheres of SLR C--giants WZ Cas and WX Cyg from resonance and subordinate Li I lines

2002-08-29

arxiv.org/abs/astro-ph/0208525v1

Astrophys.Space Sci. 288 (2003) 279-286

Astronomy and Astrophysics

Astrophysics

9 pages, 3 tables, 2 figs. To be published in AS&S

Scientific paper

10.1023/B:ASTR.0000006040.47162.

Lithium abundances in the atmospheres of the super Li-rich C-giants WZ Cas and WX Cyg are derived by the spectral synthesis technique {\bf using} the Li I resonance line at \lambda 670.8 nm and {\bf three subordinate} lines at \lambda\lambda 812.6, 610.4 and 497.2 nm. The differences between the Li abundances derived from the \lambda 670.8 nm line and the \lambda\lambda 497.2, 812.6 nm lines do not exceed $\pm$ 0.5 dex. The lithium line at \la610.4 nm provides typically lower abundances than the resonance line (by $\approx$ 1 dex). The mean LTE and NLTE Li abundances from three Li I lines (excluding \la610.4 nm) are 4.7, 4.9 for WZ Cas, and 4.6, 4.8 for WX Cyg, respectively.

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