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This is the third paper in a series analyzing X-ray emission from the hot interstellar medium in a sample of 54 normal elliptical galaxies observed by Chandra, focusing on 36 galaxies with sufficient signal to compute radial temperature…

Astrophysics · Physics 2009-11-13 Steven Diehl , Thomas S. Statler

Static structure models, which map mass-radius constraints to bulk planet composition, are frequently used to categorise exoplanets due to their computational efficiency and the high-level insight they offer into planetary properties.…

Earth and Planetary Astrophysics · Physics 2026-04-20 Harrison Nicholls , Oliver Shorttle , Tim Lichtenberg , Flavia Pascal

Since the discovery of the first transiting hot Jupiters, models have sought to explain the anomalously large radii of highly irradiated gas giants. We now know that the size of hot Jupiter radius anomalies scales strongly with a planet's…

Earth and Planetary Astrophysics · Physics 2016-02-17 Eric D. Lopez , Jonathan J. Fortney

The inflated radii observed in hundreds of Hot Jupiters represent a long-standing open issue. The observed correlation between radii and irradiation strength, and the occasional extreme cases, nearly double the size of Jupiter, remain…

Earth and Planetary Astrophysics · Physics 2025-04-25 Taner Akgün , Clàudia Soriano-Guerrero , Albert Elias-López , Daniele Viganò , Rosalba Perna , Fabio Del Sordo

Recent formation and structure models of Jupiter suggest that the planet can have composition gradients and not be fully convective (adiabatic). This possibility directly affects our understanding of Jupiter's bulk composition and origin.…

Earth and Planetary Astrophysics · Physics 2018-03-14 A. Vazan , R. Helled , T. Guillot

The most irradiated transiting hot Jupiters are characterized by anomalously inflated radii, sometimes exceeding Jupiter's size by more than 60%. While different theoretical explanations have been applied, none of them provide a universal…

Earth and Planetary Astrophysics · Physics 2015-06-03 Brice-Olivier Demory , Sara Seager

Context: A new generation of instruments (e.g., JWST, ELTs, PLATO and Ariel) is providing atmospheric spectra and mass/radius measurements for large exoplanet populations, challenging planetary models used to interpret these findings. Aims:…

Recent advances in space and ground-based facilities now enable atmospheric characterization of a selected sample of rocky exoplanets. These atmospheres offer key insights into planetary formation and evolution, but their interpretation…

Earth and Planetary Astrophysics · Physics 2025-07-29 Leonardos Gkouvelis , Francisco J. Pozuelos , Thomas Drant , Mohammad Farhat , Meng Tian , Can Akın

We extend the description of equivalent-barotropic equations for exoplanets to the diabatic case -- that is, with explicit heating and/or cooling representation, rather than with a stationary deflection of the bottom bounding surface. In…

Earth and Planetary Astrophysics · Physics 2025-03-25 Songyuan Wei , Jagat Kafle , James Y-K. Cho

The anomalously large radii of highly-irradiated gaseous exoplanets has long been a mystery. One mechanism suggested as a solution for hot Jupiters is the heating of the deep atmosphere via the vertical advection of potential temperature…

Earth and Planetary Astrophysics · Physics 2021-12-15 F. Sainsbury-Martinez , S. L. Casewell , J. D. Lothringer , M. W. Phillips , P. Tremblin

The clear detection with CoRoT and KEPLER of radial and non-radial solar-like oscillations in many red giants paves the way to seismic inferences on the structure of such stars. We present an overview of the properties of the adiabatic…

Solar and Stellar Astrophysics · Physics 2010-12-21 Josefina Montalban , Andrea Miglio , Arlette Noels , Richard Scuflaire , Paolo Ventura

Accretional heating of Earth's interior during formation is pivotal to its subsequent thermal and chemical evolution. In particular, impact heating of Earth's core is expected, but its amplitude and radial distribution within the core is…

Earth and Planetary Astrophysics · Physics 2026-04-21 You Zhou , Peter E. Driscoll , Mingming Zhang , Christian Reinhardt , Thomas Meier

Embedded planets disturb the density structure of the ambient disk and gravitational back-reaction will induce possibly a change in the planet's orbital elements. The accurate determination of the forces acting on the planet requires…

Earth and Planetary Astrophysics · Physics 2015-06-11 Wilhelm Kley , Tobias W. A. Mueller , Stefan M. Kolb , Pablo Benitez-Llambay , Frederic Masset

Protoplanets can interact with their natal disks and generate gas and dust substructures such as gaps and rings. However, how these planet-induced substructures affect the disk temperature, and how that in turn influences the substructures,…

Earth and Planetary Astrophysics · Physics 2025-07-04 Kan Chen , Paola Pinilla , Mihkel Kama

Context: Several recent studies have found that planet migration in adiabatic discs differs significantly from migration in isothermal discs. Depending on the thermodynamic conditions, i.e., the effectiveness of radiative cooling, and the…

Earth and Planetary Astrophysics · Physics 2014-09-05 K. -M. Dittkrist , C. Mordasini , H. Klahr , Y. Alibert , T. Henning

We examine the radius evolution of close-in giant planets with a planet evolution model that couples the orbital-tidal and thermal evolution. For 45 transiting systems, we compute a large grid of cooling/contraction paths forward in time,…

Earth and Planetary Astrophysics · Physics 2009-09-28 N. Miller , J. J. Fortney , B. Jackson

We present a new numerical framework to model the formation and evolution of giant planets. The code is based on the further development of the stellar evolution toolkit Modules for Experiments in Stellar Astrophysics (MESA). The model…

Earth and Planetary Astrophysics · Physics 2021-09-10 Claudio Valletta , Ravit Helled

For most planets in the range of radii from 1 to 4 R$_{\oplus}$, water is a major component of the interior composition. At high pressure H${}_{2}$O can be solid, but for larger planets, like Neptune, the temperature can be too high for…

Earth and Planetary Astrophysics · Physics 2014-03-20 Li Zeng , Dimitar Sasselov

The first mass-estimate of an exoplanet around a Sun-like star, 51 Peg b and the first radius measurement of an exoplanet, HD209458b pointed to the challenges of understanding the atmosphere, interior, and evolution of exoplanets including…

Earth and Planetary Astrophysics · Physics 2021-12-15 Nadine Nettelmann , Diana Valencia

We derived a new formula for calculating the moist adiabatic temperature profile of an atmosphere consisting of ideal gases with multiple condensing species. This expression unifies various formulas published in the literature and can be…

Earth and Planetary Astrophysics · Physics 2018-05-09 Cheng Li , Andrew Ingersoll , Fabiano Oyafuso
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