Frequency analysis of the first-overtone RR Lyrae stars based on Extended Aperture Photometry from K2 data

Open Access

Fig. 22

Distribution of first-overtone periods for RRc (black solid line) and RR_0.61 stars (red dashed line). Incidence rates of RR_0.61 stars are given for each bin. The errors were calculated assuming Poisson distribution (e.g. Alcock et al. 2003).

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