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Fig. 4

image

Radial velocity solution of IO Aqr. The lower panel shows the model predictions with continous lines from the WD code calculated for a constant orbital period of P = 2.368137 d. Overplotted are radial velocities for the primary (denoted 1) and the secondary (denoted 2). The dotted line corresponds to the systemic velocity of 9.66 km s-1 corresponding to a mean epoch of CORALIE and HARPS spectra. The upper panel shows residuals from the model fit.

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