The Influences of Hydrogen-Silicate-Iron Miscibility on the Demographics of Sub-Neptunes and Super-Earths

arXiv:2604.28135 · astro-ph.EP · Submitted 2026-04-30 · Read on arXiv

Edward D. Young, Aaron Werlen

astro-ph.EP

Submitted: 2026-04-30

Comments: Revised to match version accepted for publication in ApJ. Added Figure 9, updated Figures 4 and 11

Code: https://github.com/eyoungucla/G

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Core — 99× in this paper · explained in 2 episodes
• Ab Initio — 3× in this paper · explained in 1 episode
• Abundance — 3× in this paper · explained in 1 episode
• Consistency — 3× in this paper · explained in 3 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Additivity — 1× in this paper · explained in 1 episode
• Arbiter — 1× in this paper · explained in 1 episode
• Entrainment — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Forward modeling — 1× in this paper · explained in 2 episodes
• Inverse Problem — 1× in this paper · explained in 2 episodes
• Metallicity — 1× in this paper · explained in 3 episodes
• Provenance — 1× in this paper · explained in 3 episodes
• Self-consistency — 1× in this paper · explained in 2 episodes
• Spectral Signature — 1× in this paper · explained in 2 episodes
• Verification — 1× in this paper · explained in 2 episodes

Sources

• JWST Reveals CH$_4$, CO$_2$, and H$_2$O in a Metal-rich Miscible Atmosphere on a Two-Earth-Radius Exoplanet
• A water-rich interior in the temperate sub-Neptune K2-18 b revealed by JWST
• The Surface and Interior Conditions of Temperate Sub-Neptune TOI-270 d
• Sub-Neptune Memories I: Implications of Inefficient Mantle Cooling and Silicate Rain

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