Spectroscopic and photometric variability of spot-like systems. Left column: bidimensional periodogram of the Hα line of two spot-like systems. The color code represents the power of periodogram, varying from zero (white) to the maximum power intensity (black). Black lines correspond to the photometric period of the stellar light curve observed with CoRoT in 2011. Middle column: Hα line profiles. Different colors correspond to different nights of observation, and the thick red line is the average line profile. Right column: CoRoT light curve from 2011. None of the spot-like systems observed with FLAMES showed any periodicity in the Hα line.