Gaseous mean opacities for giant planet and ultracool dwarf atmospheres over a range of metallicities and temperatures
Richard S. Freedman,Richard S. Freedman,Jacob Lustig-Yaeger,Jonathan J. Fortney,Roxana Lupu,Mark S. Marley,Katharina Lodders +6 more
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In this article, the authors presented new calculations of Rosseland and Planck gaseous mean opacities relevant to the atmospheres of giant planets and ultracool dwarfs.Abstract:
We present new calculations of Rosseland and Planck gaseous mean opacities relevant to the atmospheres of giant planets and ultracool dwarfs. Such calculations are used in modeling the atmospheres, interiors, formation, and evolution of these objects. Our calculations are an expansion of those presented in Freedman et al. to include lower pressures, finer temperature resolution, and also the higher metallicities most relevant for giant planet atmospheres. Calculations span 1 μbar to 300 bar, and 75-4000 K, in a nearly square grid. Opacities at metallicities from solar to 50 times solar abundances are calculated. We also provide an analytic fit to the Rosseland mean opacities over the grid in pressure, temperature, and metallicity. In addition to computing mean opacities at these local temperatures, we also calculate them with weighting functions up to 7000 K, to simulate the mean opacities for incident stellar intensities, rather than locally thermally emitted intensities. The chemical equilibrium calculations account for the settling of condensates in a gravitational field and are applicable to cloud-free giant planet and ultracool dwarf atmospheres, but not circumstellar disks. We provide our extensive opacity tables for public use.read more
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From thermal dissociation to condensation in the atmospheres of ultra hot Jupiters: WASP-121b in context
Vivien Parmentier,Vivien Parmentier,Michael R. Line,Jacob L. Bean,Megan Mansfield,Laura Kreidberg,Roxana Lupu,Channon Visscher,Channon Visscher,Jean-Michel Desert,Jonathan J. Fortney,M. Deleuil,Jacob Arcangeli,Adam P. Showman,Mark S. Marley +14 more
TL;DR: The spectral properties of ultra hot Jupiters were investigated in this article, where the authors used the SPARC/MITgcm spectral model to model the atmospheres of the four ultra hot supergiants and discussed more thoroughly the case of WASP-121b.
Journal ArticleDOI
Observing the Atmospheres of Known Temperate Earth-sized Planets with JWST
Caroline V. Morley,Laura Kreidberg,Zafar Rustamkulov,Tyler D. Robinson,Tyler D. Robinson,Jonathan J. Fortney +5 more
TL;DR: In this paper, thermal emission and transmission spectra for each planet, varying composition and surface pressure of the atmosphere, were modeled and the molecular compositions assuming chemical equilibrium, which can strongly depend on temperature.
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The imprint of exoplanet formation history on observable present-day spectra of hot Jupiters
Christoph Mordasini,Christoph Mordasini,R. van Boekel,Paul Mollière,Th. Henning,Björn Benneke +5 more
TL;DR: In this article, a chain of models, linking the formation of a planet to its observable present-day spectrum, is presented, including the planet's formation and migration, its long-term thermodynamic evolution, a variety of disk chemistry models, a non-gray atmospheric model, and a radiometric model to obtain simulated spectroscopic observations with James Webb Space Telescope and ARIEL.
Journal ArticleDOI
Transitions in the cloud composition of hot jupiters
Vivien Parmentier,Vivien Parmentier,Jonathan J. Fortney,Adam P. Showman,Caroline V. Morley,Mark S. Marley +5 more
TL;DR: Sagan Postdoctoral Fellowship through NASA Exoplanet Science Institute; Origins grant [NNX12AI196] as discussed by the authors was used for research in the field of exoplanet science.
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H- Opacity and Water Dissociation in the Dayside Atmosphere of the Very Hot Gas Giant WASP-18b
Jacob Arcangeli,Jean-Michel Desert,Michael R. Line,Jacob L. Bean,Vivien Parmentier,Kevin B. Stevenson,Laura Kreidberg,Jonathan J. Fortney,Megan Mansfield,Adam P. Showman +9 more
TL;DR: In this paper, the authors combine five secondary eclipses of the hot Jupiter WASP-18b (T day ~ 2900 K) that they secured between 1.1 and 1.7 μm with the Wide Field Camera 3 instrument on board the Hubble Space Telescope.
References
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Solar System Abundances and Condensation Temperatures of the Elements
TL;DR: In this article, solar photospheric and meteoritic CI chondrite abundance determinations for all elements are summarized and the best currently available photosphere abundances are selected, including the meteoritic and solar abundances of a few elements (e.g., noble gases, beryllium, boron, phosphorous, sulfur).
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Modules for Experiments in Stellar Astrophysics (MESA): Planets, Oscillations, Rotation, and Massive Stars
Bill Paxton,Matteo Cantiello,Phil Arras,Lars Bildsten,Edward F. Brown,Aaron Dotter,Christopher R. Mankovich,Michael H. Montgomery,Dennis Stello,Francis Timmes,Richard H. D. Townsend +10 more
TL;DR: Modules for Experiments in Stellar Astrophysics (MESA) as discussed by the authors is an open source software package for modeling the evolution of stellar structures and composition. But it is not suitable for large-scale systems such as supernovae.
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Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
Bill Paxton,Matteo Cantiello,Phil Arras,Lars Bildsten,Edward F. Brown,Aaron Dotter,Christopher R. Mankovich,Michael H. Montgomery,Dennis Stello,Frank Timmes,Richard H. D. Townsend +10 more
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