9 papers
Volatile-bearing mineral atmospheres of hot rocky exoplanets as probes of interior state and composition
Fabian L. Seidler, Paolo A. Sossi, Dan J. Bower +1
The atmospheres of hot rocky exoplanets (HREs), should they persist, are products of interactions with underlying magma oceans. Spectra collected by the James Webb Space Telescope…
Low-spin ferrous iron suppresses mantle oxidation beyond Earth-like pressures
Alice Girani, Sylvain Petitgirard, Sergey Yaroslavstsev +5
The Earth's mantle has elevated Fe relative to those of other rocky bodies, yet the oxidation- and electronic state of iron at extreme pressures is poorly known. We present…
Silane-Methane Competition in Sub-Neptune Atmospheres as a Diagnostic of Metallicity and Magma Oceans
Kaustubh Hakim, Dan J. Bower, Fabian L. Seidler +1
The James Webb Space Telescope is characterising the atmospheres of sub-Neptunes. The presence of magma oceans on sub-Neptunes is expected to strongly alter the chemistry of their…
Physicochemical Controls on the Compositions of the Earth and Planets
Paolo A. Sossi, Remco C. Hin, Thorsten Kleine +2
Despite the fact that the terrestrial planets formed from the protoplanetary disk, their compositions show marked departures from that of solar nebula condensates. Metallic cores f…
Diversity of low-mass planet atmospheres in the C-H-O-N-S-Cl system with interior dissolution, nonideality, and condensation: Application to TRAPPIST-1e and sub-Neptunes
Dan J. Bower, Maggie A. Thompson, Kaustubh Hakim +2
A quantitative understanding of the nature and composition of low-mass rocky (exo)planet atmospheres during their evolution is needed to interpret observations. The magma ocean sta…
Water solubility in silicate melts: The effects of melt composition under reducing conditions and implications for nebular ingassing on rocky planets
Maggie A. Thompson, Paolo A. Sossi, Dan J. Bower +3
Rocky planet atmospheres form and evolve through interactions between the planet's surface and interior. If a growing rocky planet acquires enough mass prior to the dissipation of…