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The evolution of giant planets
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- 2004
As a whole this dissertation aims to understand giant planets as an entire class of astronomical objects. Initially we investigate the mechanics and evolutionary effects of phase separation in the…
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We build on recent new evolutionary models of Jupiter and Saturn and here extend our calculations to investigate the evolution of extrasolar giant planets of mass 0.15MJ-3.0MJ. Our inhomogeneous…
Evidence for a Dichotomy in the Interior Structures of Jupiter and Saturn from Helium Phase Separation
- Physics, GeologyThe Astrophysical Journal
- 2020
We examine the comparative thermal evolution of Jupiter and Saturn, applying recent theoretical results for helium’s immiscibility in fluid metallic hydrogen. The redistribution of helium in their…
Inhomogeneous Models of Jupiter and Saturn
- Physics, Geology
- 2015
The H‐He rich giant planets Jupiter and Saturn serve to test predictions on the high‐pressure behavior of hydrogen and helium. Incorporating the process of H/He phase separation and He rain, or of…
BAYESIAN EVOLUTION MODELS FOR JUPITER WITH HELIUM RAIN AND DOUBLE-DIFFUSIVE CONVECTION
- Physics
- 2016
Hydrogen and helium demix when sufficiently cool, and this bears on the evolution of all giant planets at large separations at or below roughly a Jupiter mass. We model the thermal evolution of…
An exploration of double diffusive convection in Jupiter as a result of hydrogen-helium phase separation
- Physics, Geology
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Author(s): Nettelmann, N; Fortney, JJ; Moore, K; Mankovich, C | Abstract: Jupiter's atmosphere has been observed to be depleted in helium (Yatm~0.24), suggesting active helium sedimentation in the…
SELF-CONSISTENT MODEL ATMOSPHERES AND THE COOLING OF THE SOLAR SYSTEM'S GIANT PLANETS
- Physics, Geology
- 2011
We compute grids of radiative–convective model atmospheres for Jupiter, Saturn, Uranus, and Neptune over a range of intrinsic fluxes and surface gravities. The atmosphere grids serve as an upper…
NEW INSIGHTS ON SATURN'S FORMATION FROM ITS NITROGEN ISOTOPIC COMPOSITION
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The recent derivation of a lower limit for the 14N/15N ratio in Saturn's ammonia, which is found to be consistent with the Jovian value, prompted us to revise models of Saturn's formation using as…
The Origin and Evolution of Saturn: A Post-Cassini Perspective
- Physics, Geology
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The Saturn system has been investigated extensively since the early 1970s, with the bulk of these data generated by the Cassini-Huygens Mission between 2004 and 2017. A major thrust of those…
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