19 papers
Organosulfur Chemistry on sub-Neptunes: Implications for hazes and biosignatures
Sean Jordan, Shang-Min Tsai, Paul B. Rimmer +1
The organosulfur biosignature gases dimethylsulfide (DMS) and dimethlydisulfide (DMDS) have recently been claimed to be present in the atmosphere of sub-Neptune exoplanet K2-18b, l…
Earth and Mars interior structures set by re-melting of the first solid mantle
Antonio Manjón-Cabeza Córdoba, Maxim D. Ballmer, Oliver Shorttle
Magma ocean crystallisation sets up the early structure and long-term evolution of terrestrial planets. Recent seismic evidence signals the presence of a silicate layer at the base…
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…
Most Rocky Sub-Neptunes are Molten: Mapping the Solidification Shoreline for Gas Dwarf Exoplanets
Robb Calder, Oliver Shorttle, Harrison Nicholls +2
Sub-Neptunes are the most common type of detected exoplanet, yet their observed masses and radii are degenerate with several interior structures. One possibility is that sub-Neptun…
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…
The efficient delivery of highly-siderophile elements to the core creates a mass accretion catastrophe for the Earth
Richard J. Anslow, Maylis Landeau, Amy Bonsor +2
The excess abundance of highly siderophile elements (HSEs), as inferred for the terrestrial planets and the Moon, is thought to record a `late veneer' of impacts after the giant im…