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Fig. 9.
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Comparison of the Fourier amplitudes of additional-mode signals, against the TESS detections of Molnár et al. (2022). The plot clearly shows that except for V17, the K2 data are precise enough to detect sub-mmag signals in the RRc light curves. In contrast, the detection limits are higher for RRab stars, at least 1–3 mmags.
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