Fig. 7.
LS-periodogram up to 15 d−1 (left) and two spectroscopic lines (right, He Iλ5875 and Hα) for five epochs from days to months to a year, for emission-line stars HD 58978, HD 39680, and HD 45314. The markers in the LS-periodograms have the same meaning as in Fig. 4. If the dominant frequency does not satisfy the significance criterion we mark it with a green cross.
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