Fig. 1.
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Fourier transforms of primary and secondary lines. Top row: line profiles of the separated spectra of CPD-41° 7742 obtained after application of the brightness ratio for the primary (Si IVλ 4089 line, left panel) and secondary (Si IVλ 4631 line, right panel) stars. Bottom row: Fourier transform of those lines (in black) and best-match rotational profile (in red) for the primary (left panel) and secondary (right panel) stars.
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