Fig. 9

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Frequency spectrum examples for six RR0.61 stars. For each star, the top, middle, and lower panels show the frequency ranges corresponding to the f0.61, 0.5f0.61, and 1.5f0.61 signals, respectively. The horizontal axis is scaled with the first-overtone periods. The EPIC numbers are provided in the upper-left corner of the top panel.
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