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The mysterious high-latitude O-star HD 93521: new results from XMM-Newton observations

Published online by Cambridge University Press:  12 July 2011

Gregor Rauw  and
Thierry Morel
Gregor Rauw
Affiliation:
Institut d'Astrophysique & Géophysique, University of Liège, Allée du 6 Août 17, B-4000, Liège, Belgium email: rauw@astro.ulg.ac.be
Thierry Morel
Affiliation:
Institut d'Astrophysique & Géophysique, University of Liège, Allée du 6 Août 17, B-4000, Liège, Belgium email: rauw@astro.ulg.ac.be
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Abstract

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The O9.5 Vp star HD 93521 is a well known non-radial pulsator located at a high Galactic latitude. The nature (Population I vs. II) of this star has been the subject of controversy for many years. We report on an XMM-Newton observation of the star that sheds new light on its nature.

Keywords

stars: early-typestars: individual (HD 93521)X-rays: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 612 - 613
Copyright
Copyright © International Astronomical Union 2011

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