To be published in:
ASP Conference Series
Visible Spectroscopy of Colliding Wind Systems to be observed with XMM+
E. Gosset1,** and
1 Institut d'Astrophysique et de Géophysique - Université de Liège, Avenue de Cointe 5, 4000 Liège, Belgium
* Postdoctoral Researcher FNRS, Belgium
** Research Associate FNRS, Belgium
+ Based on observations collected at the European Southern Observatory (La Silla, Chile) and at the Cerro Tololo Inter-American Observatory (CTIO)
We present the very first results of a visible spectroscopy campaign
targeting colliding wind candidates of the young open cluster NGC 6231
that are going to be observed with the XMM satellite as part of the
Liège Project for Guaranteed Time Observations. We derive new
improved orbital solutions ans we discuss the spectral characteristics
of these systems. A special attention is paid to the binary star HD 152248.
We investigate its HE II
H lines and their profile variability.
We discuss the probable signature of a wind interaction process in order
to derive constraints on the properties of the shock region.