Fig. 1
Top panel: AUKR photometric observations of HD 208897. Open red squares represent mean Bessel-R values of the individual nights. The scatter of the mean brightness is about 0.005 mag. Middle panel: Hipparcos photometric data, indicating a photometric stability down to σ ~ 0.008 mag. Bottom panel: Lomb-Scargle periodograms of the AUKR (black) and the Hipparcos (red) photometric measurements.
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