14 papers
Planetesimal Formation Across the Stellar Mass Spectrum and its Influence on Exoplanet-Inherited Volatile Budgets
Joe Williams, Sebastiaan Krijt, Joanna DrÄ Å¼kowska +1
Protoplanetary discs emerging from collapsing molecular clouds are capable of forming planetesimals at the water snowline during both the cloud collapse and Class II disc phases; s…
Onset of habitable conditions on the Hadean Earth set by feedback between tides and greenhouse forcing
Marijn R. van Dijk, Harrison Nicholls, Tim Lichtenberg
In the aftermath of the Moon-forming giant impact, the Hadean Earth's mantle and surface crystallized from a global magma ocean blanketed by a dense volatile-rich atmosphere. While…
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…
Magma ocean interactions can explain JWST observations of the sub-Neptune TOI-270 d
Matthew C. Nixon, R. Sander Somers, Arjun B. Savel +9
Sub-Neptunes with substantial atmospheres may possess magma oceans in contact with the overlying gas, with chemical interactions between the atmosphere and magma playing an importa…
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…
Constraining exoplanet interiors using observations of their atmospheres
Tim Lichtenberg, Oliver Shorttle, Johanna Teske +1
Astronomical surveys have identified numerous exoplanets with bulk compositions that are unlike the planets of the Solar System, including rocky super-Earths and gas-enveloped sub-…