Fig. 3
Comparison of STIS/Lyα spectra of stars hosting transiting exoplanets: the G8V star 55 Cnc at 12.3 pc (this work, blue), the K1–K2 star HD 189733 at 19.3 pc (Lecavelier des Etangs et al. 2012, orange), the M3.5V star GJ 436 at 10.2 pc (Ehrenreich et al. 2011, red), and the G0V star HD 209458 at 49.6 pc (Vidal-Madjar et al. 2003, yellow).
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