Results 1 to 10 of about 2,811,519 (263)
Analogous response of temperate terrestrial exoplanets and Earth's climate dynamics to greenhouse gas supplement. [PDF]
Sci Rep, 2023 AbstractHumanity is close to characterizing the atmospheres of rocky exoplanets due to the advent of JWST. These astronomical observations motivate us to understand exoplanetary atmospheres to constrain habitability. We study the influence greenhouse gas supplement has on the atmosphere of TRAPPIST-1e, an Earth-like exoplanet, and Earth itself by ...
Hochman A, Komacek TD, De Luca P.
europepmc +11 more sources
The Diversity of Exoplanets: From Interior Dynamics to Surface Expressions [PDF]
Elements, 2021 The coupled interior–atmosphere system of terrestrial exoplanets remains poorly understood. Exoplanets show a wide variety of sizes, densities, surface temperatures, and interior structures, with important knock-on effects for this coupled system. Many exoplanets are predicted to have a “stagnant lid” at the surface, with a rigid stationary crust ...
Lena Noack +2 more
+9 more sources
Impact of Lorentz Violation Models on Exoplanets’ Dynamics [PDF]
Universe, 2022 Many exoplanets have been detected by the radial velocity method, according to which the motion of a binary system around its center of mass can produce a periodical variation of the Doppler effect of the light emitted by the host star. These variations are influenced by both Newtonian and non-Newtonian perturbations to the dominant inverse-square ...
Antonio Gallerati +2 more
+7 more sources
Secular spin-axis dynamics of exoplanets [PDF]
Astronomy & Astrophysics, 2019 Context. Seasonal variations and climate stability of a planet are very sensitive to the planet obliquity and its evolution. This is of particular interest for the emergence and sustainability of land-based life, but orbital and rotational parameters of exoplanets are still poorly constrained.
Saillenfest, M., Laskar, J., Boué, G.
openaire +8 more sources
Atmospheric Dynamics of Hot Exoplanets [PDF]
Annual Review of Earth and Planetary Sciences, 2015 The characterization of exoplanetary atmospheres has come of age in the past decade, as astronomical techniques now allow for albedos, chemical abundances, temperature profiles and maps, rotation periods, and even wind speeds to be measured. Atmospheric dynamics sets the background state of density, temperature, and velocity that determines or ...
Kevin Heng, Adam P. Showman
openaire +5 more sources
DYNAMICS AND TRANSIT VARIATIONS OF RESONANT EXOPLANETS [PDF]
The Astrophysical Journal, 2016 ABSTRACT Transit timing variations (TTVs) are deviations of the measured midtransit times from the exact periodicity. One of the most interesting causes of TTVs is the gravitational interaction between planets. Here we consider a case of two planets in a mean motion resonance (orbital periods in a ratio of small integers).
D. Nesvorny, D. Vokrouhlicky
openaire +4 more sources
Simultaneous Infrared Observations of the Jovian Auroral Ionosphere and Thermosphere. [PDF]
J Geophys Res Space PhysAbstract Simultaneous observations of H3+ ${\mathrm{H}}_{3}^{+}$ and H2 ${\mathrm{H}}_{2}$ in Jupiter's northern infrared aurora were conducted on 02 June 2017 using Keck‐NIRSPEC to produce polar projection maps of H3+ ${\mathrm{H}}_{3}^{+}$ radiance, rotational temperature, column density, and H2 ${\mathrm{H}}_{2}$ radiance. The temperature variations
Wang R +10 more
europepmc +2 more sources
Magma Ocean Evolution at Arbitrary Redox State. [PDF]
J Geophys Res PlanetsAbstract Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification of oxidized Earth‐similar planets, but the diversity in mean density and irradiation observed in the low ...
Nicholls H +3 more
europepmc +2 more sources
Dynamical Constraints on Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractDynamical studies of new exoplanet systems are a critical component of the discovery and characterisation process. Such studies can provide firmer constraints on the parameters of the newly discovered planets, and may even reveal that the proposed planets do not stand up to dynamical scrutiny.
Horner, J +4 more
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DYNAMICAL MEASUREMENTS OF THE INTERIOR STRUCTURE OF EXOPLANETS [PDF]
The Astrophysical Journal, 2013 Giant gaseous planets often reside on orbits in sufficient proximity to their host stars for the planetary quadrupole gravitational field to become non-negligible. In presence of an additional planetary companion, a precise characterization of the system's orbital state can yield meaningful constraints on the transiting planet's interior structure ...
Becker, Juliette C., Batygin, Konstantin
openaire +4 more sources