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Fig. 12

image

Sketch of the ionisation structure of the hot component in AG Peg during its 2015 outburst (edge-on view containing the burning WD – the black circle). The enhanced wind from the WD is ionised by its radiation. Due to the rotation of the WD, the wind is compressed towards the orbital plane, where it creates a neutral H0 zone in the form of a flared disk (see Cariková & Skopal 2012). The O+5 zone is bounded by the grey dashed line. Its location above/below the neutral zone significantly increases the efficiency of the Raman O vi λ1032 → λ6825 scattering process (see Sect. 4.7.3).

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