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Fig. 1.

image

BRITE photometric time series obtained by UBr (panel a) and BAb in 2016 (panel b) to the same Y-axis scale and with a time base of 170 days on both X axes. Panels c and d: four-day subsets of the UBr and BAb 2016 light curves binned to five-minute intervals and the corresponding multi-sine fit with the two identified pulsation frequencies again to the same Y-axis scale and with a time base of four days on both X axes.

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