9 papers
Volatile-rich evolution of molten super-Earth L 98-59 d
Harrison Nicholls, Tim Lichtenberg, Richard D. Chatterjee +3
Small low-density exoplanets are sculpted by strong stellar irradiation, but their primordial compositions and subsequent evolution are still unknown. Two often-considered scenario…
Novel Physics of Escaping Secondary Atmospheres May Shape the Cosmic Shoreline
Richard D. Chatterjee, Raymond T. Pierrehumbert
Recent James Webb Space Telescope observations of cool, rocky exoplanets reveal a probable lack of thick atmospheres, suggesting prevalent escape of the secondary atmospheres forme…
A Thick Volatile Atmosphere on the Ultrahot Super-Earth TOI-561 b
Johanna K. Teske, Nicole L. Wallack, Anjali A. A. Piette +10
Ultrashort-period (USP) exoplanets -- with R and periods 1 day -- are expected to be stripped of volatile atmospheres by intense host star irradiation…
3D Modeling of Moist Convective Inhibition in Idealized Sub-Neptune Atmospheres
Namrah Habib, Raymond T. Pierrehumbert
Atmospheric convection behaves differently in hydrogen-rich atmospheres compared to higher mean molecular weight atmospheres due to compositional gradients of tracers. Previous 1D…
Self-limited tidal heating and prolonged magma oceans in the L 98-59 system
Harrison Nicholls, Claire Marie Guimond, Hamish C. F. C. Hay +3
Rocky exoplanets accessible to characterisation often lie on close-in orbits where tidal heating within their interiors is significant, with the L 98-59 planetary system being a pr…
On the relative humidity of the atmosphere
Raymond T. Pierrehumbert, Helene Brogniez, Remy Roca
Water vapour is highly subsaturated in much of the Earth's atmosphere. This has important consequences for water vapour feedback, and also for general phenomena such as the runaway…