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LavAtmos: An open source chemical equilibrium vaporisation code for lava worlds

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arxiv 2210.10463 v3 pith:MZ6QLHWL submitted 2022-10-19 astro-ph.EP astro-ph.IMphysics.geo-ph

Christiaan P. A. Van Buchem (1) , Yamila Miguel (1 , 2) , Mantas Zilinskas (1) , Wim van Westrenen (3) ((1) University of Leiden , (2) SRON Netherlands Institute for Space Research , (3) Vrije Universiteit Amsterdam) This is my paper · ORCID
classification astro-ph.EPastro-ph.IMphysics.geo-ph
keywords atmosphericcompositionsequilibriuminteriorlavatmosabovechemicalcode
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To date, over 500 short-period rocky planets with equilibrium temperatures above 1500 K have been discovered. Such planets are expected to support magma oceans, providing a direct interface between the interior and the atmosphere. This provides a unique opportunity to gain insight into their interior compositions through atmospheric observations. A key process in doing such work is the vapor outgassing from the lava surface. LavAtmos is an open-source code that calculates the equilibrium chemical composition of vapor above a dry melt for a given composition and temperature. Results show that the produced output is in good agreement with the partial pressures obtained from experimental laboratory data as well as with other similar codes from literature. LavAtmos allows for the modeling of vaporization of a wide range of different mantle compositions of hot rocky exoplanets. In combination with atmospheric chemistry codes, this enables the characterization of interior compositions through atmospheric signatures.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Convective shutdown in the atmospheres of lava worlds

    astro-ph.EP 2024-12 accept novelty 7.0 of 10

    Convective shutdown can occur in atmospheres over magma oceans without preventing permanent magma oceans, and the resulting emission spectra carry mantle redox fingerprints.

  2. Hydrodynamical simulations of proto-Moon degassing

    astro-ph.EP 2024-12 conditional novelty 7.0 of 10

    Two-dimensional hydrodynamic simulations show that tidally assisted escape of vapor from the lunar magma ocean can explain the Moon's sodium and potassium depletion, and predict a leading/trailing surface dichotomy.

  3. Characterizing the oxidation state of rocky exoplanets with the Large Interferometer for Exoplanets (LIFE)

    astro-ph.EP 2026-07 conditional novelty 5.5 of 10

    LIFE baseline mid-IR observations of Earth-sized planets at 10 pc can retrieve CO2, CH4, and NH3 well enough to distinguish mantle redox states from IW-6 to IW+6 under the paper's modeling assumptions.

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