Fig. B.1.
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Disentangled HST UV spectra of MWC 656 around the He II 1640 Åline at orbital phases close to quadrature. The disentangled and Doppler-shifted spectra of the Be star (pink) and the companion (green) sum to the combined model spectrum (light pink), which closely reproduces the observed spectra (black). The disentangled spectra show an emission component for the companion that is moving in anti-phase with the Be star.
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