Connections between the cycle-to-cycle light curve and O−C variations of non-Blazhko RR Lyrae stars

Open Access

Fig. 2.

Strength of C2C variation as a function of the main period and some physical parameters for Kepler RRab stars. The stars with no additional frequencies, f₁ and f₂ frequencies are plotted as filled circles, rectangles and triangles, respectively. The green line shows the significant correlation between period and σ_η.

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