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Accurate knowledge of the electrical and thermal conductivities and structural properties of hydrogen-helium mixtures under thermodynamic conditions within and beyond the immiscibility range is very important to predict the thermal…

Earth and Planetary Astrophysics · Physics 2026-05-27 Valentin V. Karasiev , S. X. Hu , Joshua P. Hinz , R. M. N. Goshadze , Shuai Zhang , Armin Bergermann , Ronald Redmer

The full-phase infrared light curves of low-eccentricity hot Jupiters show a trend of increasing dayside-to-nightside brightness temperature difference with increasing equilibrium temperature. Here we present a three-dimensional model that…

Earth and Planetary Astrophysics · Physics 2016-10-17 Thaddeus D. Komacek , Adam P. Showman

The bulk water abundance on Jupiter potentially constrains the planet's formation conditions. We improve the chemical constraints on Jupiter's deep water abundance in this paper. The eddy diffusion coefficient is used to model vertical…

Earth and Planetary Astrophysics · Physics 2015-06-23 Dong Wang , Peter Gierasch , Jonathan Lunine , Olivier Mousis

The planet GJ 1214b is the second known super-Earth with a measured mass and radius. Orbiting a quiet M-star, it receives considerably less mass-loss driving X-ray and UV radiation than CoRoT-7b, so that the interior may be quite dissimilar…

Earth and Planetary Astrophysics · Physics 2015-05-20 N. Nettelmann , J. J. Fortney , U. Kramm , R. Redmer

Sub-Neptunes occupy an intriguing region of planetary mass-radius space, where theoretical models of interior structure predict that they could be water-rich, where water is in steam and supercritical state. Such planets are expected to…

Earth and Planetary Astrophysics · Physics 2025-12-05 Artyom Aguichine , Natalie Batalha , Jonathan J. Fortney , Nadine Nettelmann , James E. Owen , Eliza M. -R. Kempton

Oscillatory double-diffusive convection (ODDC) (also known as semi- convection) refers to a type of double diffusive instability that occurs in regions of planetary and stellar interiors which have a destabilizing thermal stratification and…

Solar and Stellar Astrophysics · Physics 2016-05-25 Ryan Moll , Pascale Garaud , Stephan Stellmach

Demixing properties of planetary major constituents influence the interior structure and evolution of planets. Comparing experimental and computational data on the miscibility of hydrogen and water to adiabatic profiles suggests phase…

Earth and Planetary Astrophysics · Physics 2024-12-11 Marina Cano Amoros , Nadine Nettelmann , Nicola Tosi , Philipp Baumeister , Heike Rauer

We present a set of full evolutionary sequences for white dwarfs with hydrogen-deficient atmospheres. We take into account the evolutionary history of the progenitor stars, all the relevant energy sources involved in the cooling, element…

The core accretion model for giant planet formation suggests a two layer picture for the initial structure of Jovian planets, with heavy elements in a dense core and a thick H-He envelope. Late planetesimal accretion and core erosion could…

Earth and Planetary Astrophysics · Physics 2016-09-21 Francois Soubiran , Burkhard Militzer

The equation of state of hydrogen, helium, and water effects interior structure models of giant planets significantly. We present a new equation of state data table, LM-REOS, generated by large scale quantum molecular dynamics simulations…

Astrophysics · Physics 2008-11-07 N. Nettelmann , B. Holst , A. Kietzmann , M. French , R. Redmer , D. Blaschke

Many evolutionary models of giant exoplanets still rely on simplifying assumptions that are no longer adequate given detailed constraints from Jupiter, Saturn, and modern exoplanet observations. Here, we identify the key physical…

Earth and Planetary Astrophysics · Physics 2026-01-29 Ankan Sur , Roberto Tejada Arevalo , Adam Burrows , Yi-Xian Chen

As Juno is presently measuring Jupiter's gravitational moments to unprecedented accuracy, models for the interior structure of the planet are putted to the test. While equations of state based on first principles or ab initio simulations…

Earth and Planetary Astrophysics · Physics 2024-01-01 S. Mazevet , A. Licari , F. Soubiran

The goal of this work is to investigate Jupiter's growth focusing on the amount of heavy elements accreted by the planet, and its comparison with recent structure models. Our model assumes an initial core growth dominated by pebble…

Earth and Planetary Astrophysics · Physics 2020-02-05 Julia Venturini , Ravit Helled

The brightness of Neptune is often found to be in accordance with an adiabatic interior, while the low luminosity of Uranus challenges this assumption. Here we apply revised equation of state data of hydrogen, helium, and water and compute…

Earth and Planetary Astrophysics · Physics 2019-12-04 Ludwig Scheibe , Nadine Nettelmann , Ronald Redmer

I consider a Jovian planet on a highly eccentric orbit around its host star, a situation produced by secular interactions with its planetary or stellar companions. The tidal interactions at every periastron passage exchange energy between…

Earth and Planetary Astrophysics · Physics 2018-02-28 Yanqin Wu

We use a grid-based shallow water model to simulate the atmospheric dynamics of the transiting hot Jupiter HD 209458b. Under the usual assumption that the planet is in synchronous rotation with zero obliquity, a steady state is reached with…

Astrophysics · Physics 2010-11-11 Jonathan Langton , Gregory Laughlin

Two formation scenarios have been proposed to explain the tight orbits of hot Jupiters. They could be formed in orbits with a small inclination (with respect to the stellar spin) via disk migration, or in more highly inclined orbits via…

Earth and Planetary Astrophysics · Physics 2015-06-18 Francesca Valsecchi , Frederic A. Rasio

We discuss the chemical evolution of dwarf irregular and blue compact galaxies in light of recent data, new stellar yields and chemical evolution models. We examine the abundance data for evidence of HII region self-enrichment effects,…

Astrophysics · Physics 2009-09-15 Brian D. Fields , Keith A. Olive

Observations have revealed that a significant number of hot Jupiters have anomalously large radii. Layered convection induced by compositional inhomogeneity has been proposed to account for the radius anomaly of hot Jupiters. To reexamine…

Earth and Planetary Astrophysics · Physics 2015-12-16 Hiroyuki Kurokawa , Shu-ichiro Inutsuka
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