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S 18 : a new B(e) supergiant in the Small Magellanic Cloud with evidence for an excretion disk.

F. J. Zickgraf, B. Wolf, Otmar Stahl, R. M. Humphreys

Abstract

Les observations spectroscopiques a haute dispersion de l'etoile a raies d'emission S18 sont presentees ainsi que la photometrie a large bande (UBVRIJHKL). Ces observations montrent que S18 est effectivement une supergeante B[e]. Une particularite de S18 reside dans la presence de nombreuses raies d'excitations elevees qui ne sont pas ordinairement presentes dans les supergeantes B[e]

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Key concepts: Physics, Astrophysics, Supergiant, Large Magellanic Cloud, Small Magellanic Cloud, Astronomy, Humanities, Galaxy