105 citations · 480 across the 22 of their papers we have counts for
22 papers
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,…
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…
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…
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…
A massive primordial atmosphere on early Mars
Sarah Joiret, Alessandro Morbidelli, Rafael de Sousa Ribeiro +2
Mars finished forming while the solar nebula was still present, and acquired its primordial atmosphere from this reservoir. The absence of a detectable cometary xenon signature in…
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…
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…
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…
Detectability of oxygen fugacity regimes in the magma ocean world 55 Cancri e at high spectral resolution
Spandan Dash, Matteo Brogi, Fabian Lukas Seidler +5
Ultra-short Period exoplanets (USPs) like 55 Cnc e, hosting dayside magma oceans, present unique opportunities to study surface-atmosphere interactions. The composition of a vapori…
An Oxidation Gradient Straddling the Small Planet Radius Valley
Collin Cherubim, Robin Wordsworth, Dan Bower +3
We present a population-level view of volatile gas species (H, He, HO, O, CO, CO, CH) distribution during the sub-Neptune to rocky planet transition, revealing…
A general machine learning model of aluminosilicate melt viscosity and its application to the surface properties of dry lava planets
Charles Le Losq, Clément Ferraina, Paolo A. Sossi +1
Ultra-short-period exoplanets like K2-141 b likely have magma oceans on their dayside, which play a critical role in redistributing heat within the planet. This could lead to a war…
Composition, Structure and Origin of the Moon
Paolo A. Sossi, Miki Nakajima, Amir Khan
Here we critically examine the geophysical and geochemical properties of the Moon in order to identify the extent to which dynamical scenarios satisfy these observations. New joint…
Impact of oxygen fugacity on atmospheric structure and emission spectra of ultra hot rocky exoplanets
Fabian L. Seidler, Paolo A. Sossi, Simon L. Grimm
Atmospheres above lava-ocean planets (LOPs) hold clues as to the properties of their interiors, owing to the expectation that the two reservoirs are in chemical equilibrium. Here w…
The effect of a small amount of hydrogen in the atmosphere of ultrahot magma-ocean planets: atmospheric composition and escape
Sébastien Charnoz, Aurélien Falco, Pascal Tremblin +3
Here we investigate how small amounts of hydrogen (much smaller than the mass of the exoplanet) above a magma ocean on a rocky exoplanet may modify the atmospheric chemistry and at…
Solubility of water in peridotite liquids and the prevalence of steam atmospheres on rocky planets
Paolo A. Sossi, Peter M. E. Tollan, James Badro +1
Atmospheres are products of time-integrated mass exchange between the surface of a planet and its interior. On Earth and other planetary bodies, magma oceans likely marked signific…
VapoRock: Thermodynamics of vaporized silicate melts for modeling volcanic outgassing and magma ocean atmospheres
Aaron S. Wolf, Noah Jäggi, Paolo A. Sossi +1
Silicate vapors play a key role in planetary evolution, especially dominating early stages of rocky planet formation through outgassed magma ocean atmospheres. Our open-source ther…
Evolution of Mercury's Earliest Atmosphere
Noah Jäggi, Diana Gamborino, Dan J. Bower +6
MESSENGER observations suggest a magma ocean formed on proto-Mercury, during which evaporation of metals and outgassing of C- and H-bearing volatiles produced an early atmosphere.…
Retention of water in terrestrial magma oceans and carbon-rich early atmospheres
Dan J. Bower, Kaustubh Hakim, Paolo A. Sossi +1
Massive steam and CO atmospheres have been proposed for magma ocean outgassing of Earth and terrestrial planets. Yet formation of such atmospheres depends on volatile exchange…
Tidal pull of the Earth strips the proto-Moon of its volatiles
S. Charnoz, P. A. Sossi, Y-N Lee +7
Prevailing models for the formation of the Moon invoke a giant impact between a planetary embryo and the proto-Earth \citep{Canup_2004, Cuk_Stewart_2012}. Despite similarities in t…
Thermodynamics of Element Volatility and its Application to Planetary Processes
Paolo A. Sossi, Bruce Fegley
Despite its importance in geological sciences, our understanding of interactions between gas and condensed phases (comprising solids and liquids) remains clouded by the fact that,…
Volatile loss following cooling and accretion of the Moon revealed by chromium isotopes
Paolo A. Sossi, Frédéric Moynier, Kirsten van Zuilen
Terrestrial and lunar rocks share chemical and isotopic similarities in refractory elements, suggestive of a common precursor. By contrast, the marked depletion of volatile element…
Early Solar System irradiation quantified by linked vanadium and beryllium isotope variations in meteorites
Paolo A. Sossi, Frederic Moynier, Marc Chaussidon +3
X-ray emission in young stellar objects (YSOs) is orders of magnitude more intense than in main sequence stars1,2, suggestive of cosmic ray irradiation of surrounding accretion dis…