Image Details
Caption: Figure 5.
Tidal evolution and volatile inventory of TOI-2257 b as a super-Earth from 0.6 Myr to 8 Gyr for 200 randomly selected cases under the super-Earth assumption. Upper left: surface water mass. The cases that show multiple stages of water loss crossed the inner edge of the HZ twice due to the combination of stellar evolution and tidal decay of the orbit (R. Barnes et al. 2008). Upper right: oxygen mass in the atmosphere. Bottom: eccentricity. Some cases circularized even with small initial eccentricity, which can be attributed to their relatively small semimajor axis.
© 2026. The Author(s). Published by the American Astronomical Society.