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Fig. 3.

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Parts of the CHIRON spectra with Hα and He I 6678 Å ordered according to their phase for ephemeris T0,  perpass = RJD59995.6424 + 8.23459 × E. Only some of the spectra are plotted, corresponding to around a third of the orbital period, so that change of the position of lines of 3 components (Aa, Ab, and Ba) is visible. Distances between spectra do not correspond to the distance in phase. Difference in S/N can be seen between 30 s, 300 s, and 500 s exposures.

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