29 citations · 96 across the 15 of their papers we have counts for
6 papers · 1 filter
An Equation of State for Supercritical Silicate-Hydrogen Mixtures at Sub-Neptune Interior Conditions
Sarah P. Marcum, Lars Stixrude, Edward D. Young
Many sub-Neptunes are expected to contain long-lived molten silicate interiors beneath dense H2-rich envelopes. At pressures and temperatures near the atmosphere-interior boundary,…
Hydrogen Engulfment into Sub-Neptune Cores through Magma Ocean Convective Surface Renewal
Edward D. Young
A convective surface renewal explanation for ingassing of hydrogen from H2-rich envelopes into molten cores of growing planets is presented, with particular application to sub-Nept…
Ice Giants Revisited: Uranus and Neptune as Magma Ocean Worlds
Edward D. Young, Sarah P. Marcum, Aaron Werlen +1
Uranus and Neptune are commonly interpreted as volatile-rich "ice giants", an assumption that underpins most interior models. Here we show that their observed radii, bulk densities…
A New Global Chemical Equilibrium Code: Refractory Element Signatures in Super-Earths and Sub-Neptunes
Simon Grimm, Marie-Luise Steinmeyer, Aaron Werlen +3
The atmospheres of super-Earths and sub-Neptunes can be strongly modified by chemical exchange with their molten interiors during long-lived magma ocean phases. Interpreting atmosp…
The Influences of Hydrogen-Silicate-Iron Miscibility on the Demographics of Sub-Neptunes and Super-Earths
Edward D. Young, Aaron Werlen
Models based on variable miscibility among hydrogen, molten silicate, and molten iron, coupled with atmospheric escape, can reproduce the observed occurrence density structure of s…
The Effects of Non-ideal Mixing in Planetary Magma Oceans and Atmospheres
Aaron Werlen, Edward D. Young, Hilke E. Schlichting +2
Sub-Neptunes with hydrogen-rich envelopes are expected to sustain long-lived magma oceans that continuously exchange volatiles with their overlying atmospheres. Capturing these int…