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Steps towards the abundance scale. I. The abundance of heavy elements in the Hyades cluster.

R. Cayrel, G. Cayrel de Strobel, B. Campbell

Abstract

On a analyse les spectres coudes de haut rapport signal-bruit de 12 etoiles des Hyades et un spectre solaire de comparaison pour obtenir les abondances precises des metaux (principalement le fer). Les abondances du fer sont anormalement faibles pour deux naines, a cause d'une grande activite chromospherique. Pour les dix autres etoiles l'abondance moyenne est [Fe/H]=+0,12±0,03. On donne aussi les abondances de dix autres elements

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Key concepts: Physics, Astrophysics, Cluster (spacecraft), Abundance (ecology), Biology, Computer science, Fishery, Programming language