Image Details
Caption: Figure 10.
Evolution of atmosphere mass fraction (Menv/M⊕) over time for L 98-59d, modeled using energy-limited hydrodynamic escape driven by stellar XUV radiation. The shaded region marks the observationally inferred atmosphere mass fractions—interpreted as retention zones for the planet. (C. Cadieux et al. 2025)
© 2026. The Author(s). Published by the American Astronomical Society.