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Fig. 4.

image

Selected segment from two simulated SB2 spectra. The dashed blue lines represent the primary PHOENIX spectrum, and the dotted red lines represent the secondary. The solid black line is the combined and noised spectrum with an S/N of 30. used for the simulation. The spectra are normalised to a continuum level of 1. For clarity, a vertical offset of 0.2 was introduced to separate the spectra. The upper panel shows the spectrum with the maximum RV separation, and the lower panel shows the spectrum with the smallest separation.

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