78 citations · 154 across the 23 of their papers we have counts for
13 papers · 1 filter
Probing Exoplanetary Chemistry with Ariel: Scientific Priorities and Observational Strategies
Olivia Venot, Yamila Miguel, Robin Baeyens +30
Over the past two decades, increasingly precise observations have revealed that exoplanet atmospheres are chemically diverse and often far from equilibrium, with processes such as…
Super-Earth Interiors Shrink by About 10% as They Crystallise
Tim Lichtenberg, Mara Attia, Harrison Nicholls +26
Super-Earth exoplanets are among the most abundant planets known, yet their bulk densities leave the interior state degenerate. The static structure models used to interpret them,…
Evolutionary pathways toward survival of a thick CO2- or SO2-rich atmosphere on the lava world TOI-561 b
Emma Postolec, Tim Lichtenberg, Johanna K. Teske +10
Rocky planets evolve through the exchange of volatiles between their interiors and atmospheres, an interplay still poorly constrained by observations. Remarkably, highly irradiated…
A Highly Reflective Atmosphere on the Lava World TOI-561b Revealed by JWST/NIRSpec Phase Curve
Samuel Boucher, Lisa Dang, Alex McGinty +15
Ultra-short period (USP) rocky planets are expected to be depleted of any substantial gaseous envelope due to the intense irradiation they receive from their host star, making the…
Constraining the lives and times of exoplanets through evolutionary Bayesian retrievals
Harrison Nicholls, Tim Lichtenberg, Ben Riegler +2
Static retrieval frameworks are leading tools for interpreting exoplanet observations, yet time-independent modelling leaves them prone to degeneracy and unable to resolve exoplane…
Sulfur photochemistry observationally traces mantle redox states of rocky planets
Ioannis Panagiotou, Tim Lichtenberg, Shang-Min Tsai +1
Volatile outgassing from planetary interiors controls the composition of rocky exoplanets' secondary atmospheres. However, observations indicate that disequilibrium processes, such…
Atmospheric evolution through outgassing and escape on young molten rocky exoplanets
Emma Postolec, Tim Lichtenberg, Harrison Nicholls +2
The earliest rocky planet atmospheres are shaped by competition between initial volatile inventories and atmospheric escape. On young magma ocean planets, outgassing competes with…
Reflation: redox-driven atmospheric inflation as tracer of super-Earth geochemistry
Lorenzo Cesario, Tim Lichtenberg, Mara Attia +3
We demonstrate that the redox-sensitivity of mantle outgassing can trigger transient episodes of atmospheric re-inflation in highly irradiated and geochemically-reduced super-Earth…
Coupled atmospHere Interior modeL Intercomparison (CHILI). I. Evolutionary Modelling -- Primordial Magma Oceans of Earth and Venus
Harrison Nicholls, Joshua Krissansen-Totton, Tim Lichtenberg +22
Earth and Venus represent two evolutionary outcomes arising from initially molten 'magma ocean' periods, followed by lifetimes of chemical and geophysical divergence. Their physics…
Geophysical and atmospheric implications of O-dependent melting on rocky exoplanets
Mariana Sastre, Tim Lichtenberg, Laurent Soucasse +3
The geochemical evolution of long-lived magma oceans is strongly regulated by volatile exchange between the molten mantle and the atmosphere. For planets inside the runaway-greenho…
Equifinality of Venus-like CO Atmospheres
Tereza Constantinou, Oliver Shorttle, Harrison Nicholls
While Earth locks much of its carbon in its crust as carbonates, Venus retains a comparable carbon inventory almost entirely in its atmosphere as CO. On Earth, the geological c…
Beyond the mass-radius plane: Integrated radiative-convective and interior structure simulations of the exoplanet continuum
Harrison Nicholls, Oliver Shorttle, Tim Lichtenberg +1
Static structure models, which map mass-radius constraints to bulk planet composition, are frequently used to categorise exoplanets due to their computational efficiency and the hi…
Mantle Convection and Nightside Volcanism on Lava World K2-141 b
Tobias G. Meier, Claire Marie Guimond, Raymond T. Pierrehumbert +13
Ultra-short period lava worlds offer a unique window into the coupled evolution of planetary interior and atmospheres under extreme irradiation. In this study, we investigate the m…