Fig. 3: Atmospheric pressure evolution.
From: Earth-mass planets with He atmospheres in the habitable zone of Sun-like stars
a, Evolution of the total (solid lines) and surface partial pressures of hydrogen (dotted lines) and He (dashed lines) for an Earth-mass HZ planet around a solar-like star exposed to the EUV flux evolution of a slow (red), moderate (green) or fast (blue) rotator. b, The same for a planet of mass 0.97 M⊕.
