The surprising X-ray emission of Oe stars
Abstract
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.
- Publication:
-
Active OB Stars: Structure, Evolution, Mass Loss, and Critical Limits
- Pub Date:
- July 2011
- DOI:
- Bibcode:
- 2011IAUS..272..624N
- Keywords:
-
- X-rays: stars;
- stars: early-type;
- stars: individual (HD 155806);
- stars: emission-line;
- Be