Lithium in flare stars

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Abundance, Dwarf Stars, Flare Stars, Interstellar Matter, Late Stars, Lithium, Atmospheric Models, H Alpha Line, Stellar Atmospheres, Stellar Spectra, Thermodynamic Equilibrium

Scientific paper

The lithium abundance is determined by a non-LTE method for a group of late-type dwarf stars. The majority of these stars have a Li abundance less than or equal to the solar value. Only one exception (Gliese 182) has a high Li abundance with a value near to that of the interstellar Li. If these results are typical abundances of this type of stars, they can be eliminated as sources of interstellar Li enrichment. A general relation between the presence of Li and chromospheric activity is not found. Gliese 182 is a Li-rich star with high flare incidence activity and may be a member of a very young kinematical group formed by other non-Li stars that show similar behavior.

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