1990•Unpublished venueRequires access

Hot subliminous stars at high galactic latitudes. III, Non-LTE analysis of extremely helium rich sdO-stars

S. Dreizler, U. Heber, K. Werner, S. Moehler, K. S. de Boer

Abstract

Les observations spectroscopiques CCD de 15 sous-naines riches en helium de type O sont presentees. Les temperatures effectives et les gravites sont determinees avec un modele d'atmosphere non-ETL a blanketing des raies d'hydrogene et d'helium. Une estimation des distances est realisee.

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Key concepts: Physics, Blanketing, Astrophysics, Helium, Stars, Subdwarf, Astronomy, O-type star