5 papers
Hydrogen and Helium Dissolution, Outgassing, and Loss in Evolving Sub-Neptune Magma Oceans: Examining Demographic Features and Radius Evolution
Yao Tang, Jonathan J. Fortney, Laura K. Schaefer +1
Sub-Neptunes' molten interiors are expected to accommodate large quantities of volatiles, potentially altering their radius evolution. Previous studies have examined this effect in…
Horizontal transport as a source of disequilibrium chemistry on the nightside of a hot exoplanet
Vivien Parmentier, Kevin B. Stevenson, Luis Welbanks +15
Hot Jupiters have temperature gradients of several hundreds of degrees between their permanent day and nightsides. In equilibrium, the primary carbon reservoir is expected to trans…
Sub-Neptune Memories I: Implications of Inefficient Mantle Cooling and Silicate Rain
Roberto Tejada Arevalo, Akash Gupta, Adam Burrows +3
We explore the evolution of sub-Neptune (radii between 1.5 and 4 R) exoplanet interior structures using our upgraded evolution code, \texttt{APPLE}, which self-consi…
Understanding the Origins of Super-Puff Planets: A New Mass-Loss Regime Coupled to Planetary Evolution
Yao Tang, Jonathan J. Fortney, Ruth Murray-Clay +1
Super-puffs are a class of low-mass, large-radius planets that have challenged planet formation and evolution models. Their high inferred H/He mass fractions, required to explain t…
Reassessing Sub-Neptune Structure, Radii, and Thermal Evolution
Yao Tang, Jonathan J. Fortney, Francis Nimmo +3
We present a novel python-based 1D sub-Neptune evolution model that emphasizes the thermal evolution and potential solidification of the rock/iron core and the structure of the rad…