Results 31 to 40 of about 3,196,959 (228)

Correlations between the stellar, planetary, and debris components of exoplanet systems observed by Herschel [PDF]

open access: yes, 2014
J.P.M., C.E., J.M. and B.M. are partially supported by Spanish grant AYA 2011-26202. This work was supported by the European Union through ERC grant number no.
Lestrade, J.-F.   +85 more
core   +1 more source

Secular spin-axis dynamics of exoplanets [PDF]

open access: yesAstronomy & 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   +4 more sources

Secular orbital dynamics of the innermost exoplanet of the $$\upsilon $$-Andromedæ system

open access: yesCelestial Mechanics and Dynamical Astronomy, 2023
Abstract We introduce a quasi-periodic restricted Hamiltonian to describe the secular motion of a small-mass planet in a multi-planetary system. In particular, we refer to the motion of $$\upsilon $$
Mastroianni R., Locatelli U.
openaire   +3 more sources

Tidal dynamics of transiting exoplanets [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractTransits give us the mass, radius, and orbital properties of the planet, all of which inform dynamical theories. Two properties of the hot Jupiters suggest they had a dramatic origin via tidal damping from high eccentricity. First, the tidally circularized planets (in the 1-4 day pile-up) lie along a relation or boundary in the mass-period ...
openaire   +1 more source

Effects of Bulk Composition on the Atmospheric Dynamics on Close-in Exoplanets [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract Super Earths and mini Neptunes likely have a wide range of atmospheric compositions, ranging from low molecular mass atmospheres of H2 to higher molecular atmospheres of water, CO2, N2, or other species. Here we systematically investigate the effects of atmospheric bulk compositions on temperature and wind distributions for ...
Zhang, Xi, Showman, Adam P.
openaire   +2 more sources

The Diversity of Exoplanets: From Interior Dynamics to Surface Expressions [PDF]

open access: yesElements, 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 ...
Ballmer, MD, Noack, L
openaire   +3 more sources

DIRECT MEASURE OF RADIATIVE AND DYNAMICAL PROPERTIES OF AN EXOPLANET ATMOSPHERE [PDF]

open access: yesThe Astrophysical Journal Letters, 2016
ABSTRACT Two decades after the discovery of 51 Peg b, the formation processes and atmospheres of short-period gas giants remain poorly understood. Observations of eccentric systems provide key insights on those topics as they can illuminate how a planet’s atmosphere responds to changes in incident flux.
Julien de Wit   +6 more
openaire   +5 more sources

Secular spin-axis dynamics of exoplanets (Corrigendum) [PDF]

open access: yesAstronomy & Astrophysics, 2019
International ...
Saillenfest, M., Laskar, J., Boué, G.
openaire   +3 more sources

TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain

open access: yesThe Astronomical Journal, 2023
Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. We present TOI-1136, a 700 ±
Fei Dai   +62 more
doaj   +1 more source

The 0.5MJ transiting exoplanet WASP-13b [PDF]

open access: yes, 2009
We report the discovery of WASP-13b, a low-mass $ M_{\rm p} = 0.46 ^_~M_J$ transiting exoplanet with an orbital period of 4.35298 $\pm$ 0.00004 days. The transit has a depth of 9 mmag, and although our follow-up photometry does not allow us to constrain ...
West, Richard G.   +137 more
core   +1 more source

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