Simulation data for Lammer, H., Scherf, M., et al. Earth-mass planets with He atmospheres in the habitable zone of Sun-like stars, Nature Astronomy, accepted, 2025.

Simulation data produced for the Nature Astronomy article "Earth-mass planets with He atmospheres in the habitable zone of Sun-like stars" by Lammer, Scherf et al. Data is provided for planets with 0.7-3.0 M_Earth in the HZ of solar-like stars that follow XUV flux evolutionary paths of so-called slow, moderate, and fast rotators.The main data contains (as a function of age, planetary mass, and stellar XUV flux):the primordial atmosphere mass fraction;the He fraction in the atmospheres;the total mass loss rates.In addition, it also provides:The final optical planet radii at the end of the simulations for different planetary masses and slow, moderate, and fast rotators.Atmospheric profiles for two specific cases, i.e., for 0.97 M_Earth and 1.00 M_Earth, both for the slow rotator case. The profiles are for the last time step of the simulations. For 0.97 M_Earth, hydrogen is completely lost afterward.The transit depth in the HeI triplet for 1.00 M_Earth for tmospheric He fractions of 30%, 50%, and 70%.The final author edited pre-publication figures of the article as pdf and their source data (one xlsx-file for each figure).Further information on the 1D hydrodynamic upper atmosphere model and the parameter range of the simulations can be found in the article.