Fig. 2

Top: spectroscopic orbital solution for PG 1104+243 (solid line: MS, dashed line: sdB), and the observed radial velocities (blue filled circles: MS HERMES spectra, blue open circles: sdB HERMES spectra, green triangles: MS MMT spectra). The measured system velocity of both components is shown by a dotted line. Middle: residuals of the MS component. Bottom: residuals of the sdB component.
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