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Fig. 3


Ly-α line flux integrated over [95; 55] km s-1 (blue points) and the complementary domain in [210; 210] km s-1, airglow excluded (black points). The flux is normalized by the reference measurements in the left panel, and plotted as a function of time relative to the transit of TRAPPIST-1b (left and middle panels) and TRAPPIST-1c (right panel).

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