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Fig. 9.


The Keplerian orbital fits to cleaned radial velocities of RV Tau and DF Cyg. Left panel: cleaned orbit of RV Tau. Right panel: cleaned orbit of DF Cyg. The plots are phased such that the periastron passage is at phase 0. The orbital fit is represented by the black line and the grey shaded regions in the residuals extend ±3σ from the mean.

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