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Theories of planet formation predict the birth of giant planets in the inner, dense, and gas-rich regions of the circumstellar disks around young stars. These are the regions from which strong CO emission is expected. Observations have so…

Solar and Stellar Astrophysics · Physics 2015-05-20 Zs. Regaly , L. Kiss , Zs. Sandor , C. P. Dullemond

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 on the interior--atmosphere…

Earth and Planetary Astrophysics · Physics 2020-11-04 Rob J. Spaargaren , Maxim D. Ballmer , Dan J. Bower , Caroline Dorn , Paul J. Tackley

Gas giant planets, if present, are the most massive objects in a planetary system and play a pivotal role in shaping its overall architecture. The formation of these planets has constantly been a central issue in planetary science.…

Earth and Planetary Astrophysics · Physics 2025-04-08 Masahiro Ikoma , Hiroshi Kobayashi

We examine the uncertainties in current planetary models and we quantify their impact on the planet cooling histories and mass-radius relationships. These uncertainties include (i) the differences between the various equations of state used…

Astrophysics · Physics 2014-11-18 I. Baraffe , G. Chabrier , T. Barman

The James Webb Space Telescope (JWST) will measure exoplanet transmission and eclipse spectroscopy at un-precedented precisions to better understand planet structure, dynamics, chemistry and formation. These are essential tools on the march…

Earth and Planetary Astrophysics · Physics 2018-07-18 Everett Schlawin , Thomas P. Greene , Michael Line , Jonathan J. Fortney , Marcia Rieke

The study of extrasolar planets has rapidly expanded to encompass the search for new planets, measurements of sizes and masses, models of planetary interiors, planetary demographics and occurrence frequencies, the characterization of…

Instrumentation and Methods for Astrophysics · Physics 2016-04-25 I. J. M. Crossfield

Atmospheric characterization through spectroscopic analysis, an essential tool of modern exoplanet science, can benefit significantly from the context provided by interior structure models. In particular, the planet's bulk metallicity $Z_p$…

Earth and Planetary Astrophysics · Physics 2019-04-17 Daniel P. Thorngren , Jonathan J. Fortney

The effect of enhanced UV irradiation associated with stellar flares on the atmospheric composition and temperature of gas giant exoplanets was investigated. This was done using a 1D radiative-convective-chemical model with self-consistent…

Earth and Planetary Astrophysics · Physics 2023-06-21 Harrison Nicholls , Eric Hébrard , Olivia Venot , Benjamin Drummond , Elise Evans

We know that giant planets played a crucial role in the making of our Solar System. The discovery of giant planets orbiting other stars is a formidable opportunity to learn more about these objects, what is their composition, how various…

Astrophysics · Physics 2009-11-10 Tristan Guillot

We discuss our current understanding of the interior structure and thermal evolution of giant planets. This includes the gas giants, such as Jupiter and Saturn, that are primarily composed of hydrogen and helium, as well as the "ice…

Earth and Planetary Astrophysics · Physics 2014-11-20 Jonathan J. Fortney , Nadine Nettelmann

Gas giant planets play a fundamental role in shaping the orbital architecture of planetary systems and in affecting the delivery of volatile materials to terrestrial planets in the habitable zones. Current theories of gas giant planet…

Earth and Planetary Astrophysics · Physics 2010-06-30 Gennaro D'Angelo , Richard H. Durisen , Jack J. Lissauer

The present-day bulk elemental composition of an exoplanet can provide insight into a planet's formation and evolutionary history. Such information is now being measured for dozens of planets with state-of-the-art facilities using Bayesian…

Earth and Planetary Astrophysics · Physics 2025-10-31 Joshua D. Lothringer , Nataliea Lowson , Guangwei Fu

The James Webb Space Telescope (JWST) will revolutionize our understanding of exoplanets with transit spectroscopy of a wide range of mature planets close to their host stars ($<$2 AU) and with coronagraphic imaging and spectroscopy of…

Instrumentation and Methods for Astrophysics · Physics 2018-03-14 Charles A. Beichman , Tom P. Greene

The growing number of exoplanet discoveries and advances in machine learning techniques have opened new avenues for exploring and understanding the characteristics of worlds beyond our Solar System. In this study, we employ efficient…

Earth and Planetary Astrophysics · Physics 2023-08-29 Mahdiyar Mousavi-Sadr , Davood M. Jassur , Ghassem Gozaliasl

With the goal of confirming the metallicity ``excess'' observed in stars with planetary mass companions, we have conducted a high-precision spectroscopic study of a ``comparison'' sample of dwarfs included in the CORALIE extra-solar planet…

Astrophysics · Physics 2007-05-23 Nuno C. Santos , Garik Israelian , Michel Mayor

Astrophysical observations reveal a large diversity of radii and masses of exoplanets. It is important to characterize the interiors of exoplanets to understand planetary diversity and further determine how unique, or not, Earth is.…

Earth and Planetary Astrophysics · Physics 2019-02-06 Caroline Dorn , Dan J. Bower , Antoine B. Rozel

We propose a comprehensive survey of giant planets ranging from close-in highly irradiated hot Jupiters to young, wide-orbit directly imaged planets. The combination of two established techniques for probing planetary atmospheric…

Instrumentation and Methods for Astrophysics · Physics 2024-09-04 Munazza K. Alam , Emily Rickman , Kielan Hoch , Paul Mollière , Josh Lothringer , Aarynn L. Carter , Isabel Rebollido , Ben J. Sutlieff , Jens Kammerer

Studying the interiors of the outer planets is crucial for a comprehensive understanding of our planetary system, and provides key knowledge on the origin of the solar system, the behavior of materials at extreme conditions, the relation…

Earth and Planetary Astrophysics · Physics 2024-07-09 Ravit Helled , Saburo Howard

Recent developments of dynamic x-ray characterization experiments of dense matter are reviewed, with particular emphasis on conditions relevant to interiors of terrestrial and gas giant planets. These studies include characterization of…

Earth and Planetary Astrophysics · Physics 2015-05-13 J. J. Fortney , S. H. Glenzer , M. Koenig , B. Militzer , D. Saumon , D. Valencia