Reference : The surprising X-ray emission of Oe stars
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
The surprising X-ray emission of Oe stars
Nazé, Yaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique observationnelle (sol et espace)]
Rauw, Grégor mailto [Université de Liège - ULiège > Dept AGO]
ud-Doula, Asif [Penn State Worthington Scranton, 120 Ridge View Drive, Dunmore, PA 18512, USA]
Active OB stars: structure, evolution, mass loss and critical limits
[en] Proceedings IAU Symposium no. 272
Neiner, Coralie
Wade, G.
Meynet, G.
Peters, G.
IAU Symposium no. 272
19-23 July 2010
[en] X-rays: stars ; stars: early-type ; stars: individual (HD 155806) ; stars: emission-line ; Be
[en] Oe stars are thought to represent an extension of the Be phenomenon to higher temperatures. Dedicated XMM observations of HD 155806 revealed a surprising X-ray spectrum: soft character, absence of overluminosity, broad X-ray lines. These properties are fully compatible with the wind-shock model, which usually explains the X-rays from ``normal', single O-type stars. In contrast, some other Oe/Be stars display a completely different behaviour at high energies.

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