Extended Data Fig. 5: Pixel-level comparison the two transits of KIC-7906827.01.
From: An exomoon survey of 70 cool giant exoplanets and the new candidate Kepler-1708 b-i
Left: Pixel log-intensity is shown for the postage stamp downloaded for KIC-7906827 from the Kepler spacecraft, for epochs 1 (top) and 2 (bottom). The black solid outline shows the optimal aperture selected by the Kepler pipeline. Middle: Same as the left, except we show the signal to noise ratio (SNR) of the planetary transit signal in each pixel. As expected, the transit signal is colocated with the brightest source in view. Right: Same as the middle, except we show the chi-squared improvement of the planet–moon model over the planet-only model in each pixel light curve after local detrending. As expected, the moon signal appears colocated with the target.
