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Fig. 8.

image

Position of KIC 9832227 (light blue dot) on the schematic diagram relating the rotation frequency to the ratio of the period of the long-term cyclic luminosity variation due to stellar activity to the rotation period. The shaded area covers the data points shown by Almeida et al. (2019), based on the studies of Vida et al. (2013, 2014), Oláh et al. (2009), and Savanov (2012). Shown are red dwarfs (pink) and other stars (dark gray), with the extension to non-populated regions (light gray). Isolated small gray squares indicate objects distinct from the bulk of the sample.

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