X-raying the colliding wind binary system HDE228766

Details X-raying the colliding wind binary system HDE228766 X-raying the colliding wind binary system HDE228766

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...17r&link_type=abstract

XMM-Newton Proposal ID #06704803

Computer Science

Stars, White Dwarfs, Solar System, Hde228766, Hde228766, Hde228766

Scientific paper

We propose to observe the interacting wind binary system HDE228766 at three carefully chosen orbital phases. This system hosts a rare Of-WN8ha transition object whose wind crashes onto the surface of its O7 companion. The X-ray brightness and the geometry of the system offer ideal conditions to probe the wind of the transition star: by comparing X-ray spectra taken at three phases, we will constrain its mass-loss rate, investigate the feedback of the X-ray emission on the ionization structure of the wind and study the impact of the wind interaction zone on the optical spectrum of the O7 companion.

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