Fig. 7
Upper panel: comparison of the best-fit model spectrum (dashed cyan line, model 047) toan observed spectrum (solid black line) of GJ 1203 optimized for the lines of Na I D2 (top left panel), Hα (top right panel), and the bluest Ca II IRT line (bottom left panel). In the range of the He I IR line (bottom right panel), the observed CARMENES template obtained with SERVAL is shown. The emission line redward of the Na I D2 line in the observation of GJ 1203 is an airglow line. Bottom panel: same as in the upper plot for GJ 625 (model 042).
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