Hα EWs during the observation (from Table B.1) of the central binary components Delorme 1 A and Delorme 1 B (top), and companion Delorme 1 (AB)b (bottom). Negative values indicate emission. From the evolution of the EW over 2.5 h, it is clear that A is undergoing a rapid decrease in width (weaker emission) until it plateaus at around −40 Å, while B stays at an average of −32 Å, and (AB)b fluctuates around an average of −135 Å. There is no clear correlation between the changes in EW in the central binary pair and the companion, indicating that emission is intrinsic to each object. We also note that the rapid change in the EW of Delorme 1 A, as the excess emission due to the flare dissipates, is absent in B and (AB)b.