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X-ray analysis of the colliding wind binary FO15

Albacete Colombo, J. F.

We combine and analyze ten XMM-Newton X-ray observations of the FO15 hot massive (O5V((f))+O9.5V) binary system. EPIC spectra are fitted according to a warm absorption model N(ism)x N(wind) in combination with a two temperature (APEC) optically thin thermal plasma model of temperatures kT(1)=0.22 and kT(2)=2.62 keV, and the inclusion of six indepe…