Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations

  title={Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations},
  author={Dan J. Bower and Daniel Kitzmann and Aaron S. Wolf and Patrick Sanan and Caroline Dorn and Apurva V. Oza},
  journal={Astronomy \& Astrophysics},
Context. A terrestrial planet is molten during formation and may remain molten due to intense insolation or tidal forces. Observations favour the detection and characterisation of hot planets, potentially with large outgassed atmospheres. Aims. We aim to determine the radius of hot Earth-like planets with large outgassing atmospheres. Our goal is to explore the differences between molten and solid silicate planets on the mass–radius relationship and transmission and emission spectra. Methods… 
The influence of bulk composition on the long-term interior-atmosphere evolution of terrestrial exoplanets
Aims. The secondary atmospheres of terrestrial planets form and evolve as a consequence of interaction with the interior over geological time. We aim to quantify the influence of planetary bulk
Composition of terrestrial exoplanet atmospheres from meteorite outgassing experiments
Terrestrial exoplanets likely form initial atmospheres through outgassing during and after accretion, although there is currently no first-principles understanding of how to connect a planet’s bulk
Internal dynamics of magma ocean and its linkage to atmospheres
Geological and astronomical observations on the "lava world" of the rocky planet, with additional theoretical interpretation of Moon’s crustal formation, bring up to the occurrence of the magma ocean
Effect of mantle oxidation state and escape upon the evolution of Earth’s magma ocean atmosphere
The magma ocean period was a critical phase determining how Earth atmosphere developed into habitability. However there are major uncertainties in the role of key processes such as outgassing from
Parameterisations of interior properties of rocky planets
Context. Observations of Earth-sized exoplanets are mostly limited to information on their masses and radii. Simple mass-radius relationships have been developed for scaled-up versions of Earth or
The Exosphere as a Boundary: Origin and Evolution of Airless Bodies in the Inner Solar System and Beyond Including Planets with Silicate Atmospheres
In this review we discuss all the relevant solar/stellar radiation and plasma parameters and processes that act together in the formation and modification of atmospheres and exospheres that consist
Retention of Water in Terrestrial Magma Oceans and Carbon-rich Early Atmospheres
Massive steam and CO2 atmospheres have been proposed for magma ocean outgassing of Earth and terrestrial planets. Yet formation of such atmospheres depends on volatile exchange with the molten
Beyond Runaway: Initiation of the Post-runaway Greenhouse State on Rocky Exoplanets
The runaway greenhouse represents the ultimate climate catastrophe for rocky, Earth-like worlds: when the incoming stellar flux cannot be balanced by radiation to space, the oceans evaporate and
Vertically Resolved Magma Ocean–Protoatmosphere Evolution: H2, H2O, CO2, CH4, CO, O2, and N2 as Primary Absorbers
A coupled numerical framework is presented that links an evolutionary, vertically resolved model of the planetary silicate mantle with a radiative‐convective models of the atmosphere and investigates the early evolution of idealized Earth‐sized rocky planets with end‐member, clear‐sky atmospheres dominated by either H2, H2O, CO2, CH4, CO, O2, or N2.
Exoplanet secondary atmosphere loss and revival
  • E. Kite, M. Barnett
  • Geology, Physics
    Proceedings of the National Academy of Sciences
  • 2020
It is implied that most rocky exoplanets orbiting closer to their star than the habitable zone that were formed with thick H2-dominated atmospheres lack high–molecular-weight atmospheres today, and atmospheres should persist on worlds that start with abundant volatiles (for example, water worlds).


It is now understood that the accretion of terrestrial planets naturally involves giant collisions, the moon-forming impact being a well-known example. In the aftermath of such collisions, the
Direct imaging of molten protoplanets in nearby young stellar associations
During their formation and early evolution, rocky planets undergo multiple global melting events due to accretionary collisions with other protoplanets. The detection and characterization of their
Thermal evolution of an early magma ocean in interaction with the atmosphere
The thermal evolution of magma oceans produced by collision with giant impactors late in accretion is expected to depend on the composition and structure of the atmosphere through the greenhouse
What Factors Affect the Duration and Outgassing of the Terrestrial Magma Ocean?
The magma ocean (MO) is a crucial stage in the build-up of terrestrial planets. Its solidification and the accompanying outgassing of volatiles set the conditions for important processes occurring
Prior work has found that a variety of terrestrial planetary compositions are expected to occur within known extrasolar planetary systems. However, such studies ignored the effects of giant planet
The relative influence of H2O and CO2 on the primitive surface conditions and evolution of rocky planets
How the volatile content influences the primordial surface conditions of terrestrial planets and, thus, their future geodynamic evolution is an important question to answer. We simulate the secular
We explore the appearance of terrestrial planets in formation by studying the emergent spectra of hot molten protoplanets during their collisional formation. While such collisions are rare, the
Atmosphere Impact Losses
Determining the origin of volatiles on terrestrial planets and quantifying atmospheric loss during planet formation is crucial for understanding the history and evolution of planetary atmospheres.