000002862 001__ 2862
000002862 005__ 20160701171712.0
000002862 037__ $$aASTROimport-1019
000002862 100__ $$aBlomme, R.
000002862 245__ $$aThe Colliding Winds of Cyg OB2 No. 8A
000002862 260__ $$c2010
000002862 520__ $$aCyg OB2 No. 8A is an O6 If + O5.5 III(f) colliding-wind binary with a period of 21.9 days. Our VLA radio observations have detected non-thermal radiation that is due to the synchrotron emission from the colliding-wind region. The radio fluxes vary in a correlated way with orbital phase, which is quite unexpected, as all synchrotron emission should to be absorbed by the free-free absorption in the stellar wind material. We develop radiative transfer models for this system, which show that this orbit-locked variability can indeed be explained. This type of radio-detectable binary is important for binary statistics and for studying clumping and porosity in the stellar wind. 
000002862 773__ $$c289$$pHot and Cool: Bridging Gaps in Massive Star Evolution$$v425$$y2010
000002862 85642 $$ahttp://esoads.eso.org/abs/2010ASPC..425..289B
000002862 905__ $$apublished in
000002862 980__ $$aNONREF