7 papers
The influence of composition gradients on giant planet radii
Henrik Knierim, Ravit Helled
The radius of a giant planet is a key physical property. It encapsulates the outcome of its mass, composition, and thermal state, serving as a critical link between observations an…
Further constraints on Jupiter's primordial structure
Henrik Knierim, Konstantin Batygin, Ravit Helled +2
The primordial structure of Jupiter remains uncertain, yet it holds vital clues on the planet's formation and early evolution. Recent work used dynamical constraints from Jupiter's…
Giant Planet Evolution with MESA
Ravit Helled, Simon Müller, Henrik Knierim
The evolution of gaseous planets is a complex process influenced by various physical parameters and processes. In this study, we present critical modifications to the Modules for E…
Unraveling the origin of giant exoplanets: Observational implications of convective mixing
Henrik Knierim, Ravit Helled
The connection between the atmospheric composition of giant planets and their origin remains elusive. In this study, we explore how convective mixing can link the primordial planet…
Convective Mixing in Gas Giant Planets with Primordial Composition Gradients
Henrik Knierim, Ravit Helled
Linking atmospheric measurements to the bulk planetary composition and ultimately the planetary origin is a key objective in planetary science. In this work, we identify the cases…
The TOI-1117 Multi-planetary System: 3 sub-Neptunes, 1 in both the Neptunian Desert and Radius Valley
Isobel S. Lockley, David J. Armstrong, Jorge Fernández Fernández +33
We present the discovery of three sub-Neptune planets around TOI-1117, a Sun-like star with mass , radius , age Gyr and ef…