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The NGC 4593 group of active galaxies

W. Kollatschny, K. J. Fricke

Abstract

Les proprietes optiques de la galaxie de Seyfert 1 NGC 4593 sont decrites en detail sur la base de spectres obtenus a differentes epoques. NGC 4593 est membre d'un groupe de galaxies. Presque tous les membres de ce groupe presentent une activite a raies d'emission intenses. On discute brievement des implications relatives a l'origine et a l'evolution de l'activite nucleaire galactique

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Key concepts: Physics, Astrophysics, Galaxy, Humanities, Astronomy, Philosophy