Results 1 to 10 of about 9,564 (167)

Temperature Structures Associated with Different Components of the Atmospheric Circulation on Tidally Locked Exoplanets [PDF]

The Astrophysical Journal, 2022
Abstract Observations of time-resolved thermal emission from tidally locked exoplanets can tell us about their atmospheric temperature structure. Telescopes such as JWST and ARIEL will improve the quality and availability of these measurements.
Neil T. Lewis, Mark Hammond
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Impact of photochemical hazes and gases on exoplanet atmospheric thermal structure [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We investigate the impact of photochemical hazes and disequilibrium gases on the thermal structure of hot Jupiters, using a detailed 1D radiative-convective model. We find that the inclusion of photochemical hazes results in major heating of the upper and cooling of the lower atmosphere.
P. Lavvas, Anthony Arfaux
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The effects of magnetic fields on observational signatures of atmospheric escape in exoplanets: Double tail structures [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACTUsing 3D radiative MHD simulations and Lyman-α transit calculations, we investigate the effect of magnetic fields on the observational signatures of atmospheric escape in exoplanets. Using the same stellar wind, we vary the planet’s dipole field strength (Bp) from 0 to 10G.
Stephen Carolan, A. A. Vidotto, Gopal Hazra, C Villarreal D’Angelo, Daria Kubyshkina   +4 more
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TEMPERATURE STRUCTURE AND ATMOSPHERIC CIRCULATION OF DRY TIDALLY LOCKED ROCKY EXOPLANETS [PDF]

The Astrophysical Journal, 2016
ABSTRACT Next-generation space telescopes will observe the atmospheres of rocky planets orbiting nearby M-dwarfs. Understanding these observations will require well-developed theory in addition to numerical simulations. Here we present theoretical models for the temperature structure and atmospheric circulation of dry, tidally locked ...
Daniel D. B. Koll, Dorian S. Abbot
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Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) III. Atmospheric structure of the misaligned ultra-hot Jupiter WASP-121b [PDF]

Astronomy & Astrophysics, 2020
Ultra-hot Jupiters offer interesting prospects for expanding our theories on dynamical evolution and the properties of extremely irradiated atmospheres. In this context, we present the analysis of new optical spectroscopy for the transiting ultra-hot Jupiter WASP-121b.
V. Bourrier, D. Ehrenreich, M. Lendl, M. Cretignier, Romain Allart, X. Dumusque, H. M. Cegla, A. Suárez Mascareño, A. Wyttenbach, H. J. Hoeijmakers, C. Melo, T. Kuntzer, N. Astudillo-Defru, H. Giles, Kevin Heng, Daniel Kitzmann, B. Lavie, C. Lovis, F. Murgas, V. Nascimbeni, F. Pepe, Lorenzo Pino, D. Ségransan, S. Udry   +23 more
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Effects of a fully 3D atmospheric structure on exoplanet transmission spectra: retrieval biases due to day–night temperature gradients [PDF]

Astronomy & Astrophysics, 2019
Transmission spectroscopy provides us with information on the atmospheric properties at the limb, which is often intuitively assumed to be a narrow annulus around the planet. Consequently, studies have focused on the effect of atmospheric horizontal heterogeneities along the limb.
A. Caldas, J. Leconte, F. Selsis, I. P. Waldmann, P. Bordé, M. Rocchetto, B. Charnay   +6 more
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Retrieval of atmospheric structure and composition of exoplanets from transit spectroscopy

, 2012
Recent spectroscopic observations of transiting exoplanets have permitted the derivation of the thermal structure and molecular abundances of H2O, CO, CO2, CH4, metallic oxides and alkali metals in these extreme atmospheres. Here, for the first time, a fully-fledged retrieval algorithm has been applied to exoplanet spectra to determine the thermal ...
Jae Min Lee
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Impact of oxygen fugacity on the atmospheric structure and emission spectra of ultra-hot rocky exoplanets

Astronomy & Astrophysics
Context. Atmospheres above lava-ocean planets (LOPs) hold clues related to the properties of their interiors, based on the expectation that the two reservoirs are in chemical equilibrium. Furthermore, such atmospheres are observable with current-generation space- and ground-based telescopes.
Fabian L. Seidler, Paolo A. Sossi, Simon L. Grimm   +2 more
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Thermal structure, composition, atmospheric dynamics and long-terme evolution of irradiated exoplanets

, 2014
More than a thousand exoplanets have been discovered over the last decade. Perhaps more excitingly, probing their atmospheres has become possible. We now have spectra of hot Jupiters like HD 189733b and HD 209458b, of Neptune-like planets like GJ1214b and even smaller planets are within reach.
Vivien Parmentier
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Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy [PDF]

Science, 2014
Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such extreme stellar forcing.
Stevenson, K. B., Desert, J.-M., Line, Michael R., Bean, J. L., Fortney, Jonathan J., Showman, A. P., Kataria, T., Kreidberg, Laura, McCullough, Peter R., Henry, Gregory W., Charbonneau, D., Burrows, A., Madhusudhan, Nikku, Williamson, M. H., Homeier, Derek, Seager, Sara   +15 more
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