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The peculiar B E star MWC 623 : a binary system with a Li-rich K star.

F. J. Zickgraf, Otmar Stahl

Abstract

Les spectres a haute resolution de l'etoile a raies d'emission MWC montrent la presence d'une composante B2 et d'une composante K2. L'etoile K montre une surabondance de lithium comparativement au Soleil. La tres forte raie de Li I λ6708 suggere que le systeme n'est pas suffisamment vieux pour que tout le lithium soit dilue dans l'etoile K tel qu'on l'observe dans la plupart des geantes K

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Key concepts: Physics, Astrophysics, Humanities, Lithium (medication), Binary star, Star (game theory), Astronomical spectroscopy, Astronomy