2 papers
astro-ph.EP2025
Origins of Mercury's Big Heart of Iron: Exploring Pathways to Form High Core Mass Fraction (CMF) Planets via N-body Simulations
Haniyeh Tajer, Ji Wang, Anna C. Childs +3
Mercury's core mass fraction (CMF) is ~0.7, more than double that of the other rocky planets in the solar system, which have CMFs of ~0.3. The origin of Mercury's large, iron-rich…
astro-ph.EP2025
Observational Signatures of a Previous Dynamical Instability in Multi-planet M-Dwarf Systems
Anna C. Childs, Alexa P. S. Hua, Rebecca G. Martin +2
We identify observational signatures suggesting a history of dynamical instability in 26 out of 34 M-dwarf multi-planet systems containing no large planets. These systems may have…