Results 41 to 50 of about 892,024 (248)
Hot Jupiters in Binary Star Systems [PDF]
The Astrophysical Journal, 2007 Radial velocity surveys find Jupiter mass planets with semi-major axes a less than 0.1 AU around ~1% of solar-type stars; counting planets with $a$ as large as 5 AU, the fraction of stars having planets reaches ~ 10% {Marcy,Butler}. An examination of the distribution of semi-major axes shows that there is a clear excess of planets with orbital periods ...
Yanqin Wu +2 more
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Modeling the High-resolution Emission Spectra of Clear and Cloudy Nontransiting Hot Jupiters [PDF]
Astrophysical Journal, 2021 The advent of high-resolution spectroscopy (R ≳ 25,000) as a method for characterization of exoplanet atmospheres has expanded our capability to study nontransiting planets, vastly increasing the number of planets accessible for observation.
Isaac Malsky +5 more
semanticscholar +1 more source
CIRCULATION AND DISSIPATION ON HOT JUPITERS [PDF]
The Astrophysical Journal, 2010 Many global circulation models predict supersonic zonal winds and large vertical shears in the atmospheres of short-period jovian exoplanets. Using linear analysis and nonlinear local simulations, we investigate hydrodynamic dissipation mechanisms to balance the thermal acceleration of these winds.
Jeremy Goodman, Jason Li
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Sulfur chemistry in the atmospheres of warm and hot Jupiters [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present and validate a new network of atmospheric thermochemical and photochemical sulfur reactions. We use a 1D chemical kinetics model to investigate these reactions as part of a broader HCNO chemical network in a series of hot and warm Jupiters ...
Richard Hobbs +3 more
semanticscholar +1 more source
The Continuing Search for Evidence of Tidal Orbital Decay of Hot Jupiters [PDF]
Astronomical Journal, 2020 Many of the known hot Jupiters are formally unstable to tidal orbital decay. The only hot Jupiter for which orbital decay has been directly detected is WASP-12, for which transit-timing measurements spanning more than a decade have revealed that the ...
K. Patra +19 more
semanticscholar +1 more source
THERMODYNAMICS OF ATMOSPHERIC CIRCULATION ON HOT JUPITERS [PDF]
The Astrophysical Journal, 2009 Atmospheric circulation on tidally-locked exoplanets is driven by the absorption and reradiation of heat from the host star. They are natural heat engines, converting heat into mechanical energy. A steady state is possible only if there is a mechanism to dissipate mechanical energy, or if the redistribution of heat is so effective that the Carnot ...
Jeremy Goodman
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Inflation of migrated hot Jupiters
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The observed low densities of gas giant planets with a high equilibrium temperature (hot Jupiters) can be simulated in models when a fraction of the surface radiation is deposited deeper in the interior. Meanwhile, migration theories suggest that hot Jupiters formed further away from their host star and migrated inward.
M. Mol Lous +2 more
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Obliquity Tides on Hot Jupiters [PDF]
The Astrophysical Journal, 2005 Obliquity tides are a potentially important source of heat for extrasolar planets on close-in orbits. Although tidal dissipation will usually reduce the obliquity to zero, a nonzero obliquity can persist if the planet is in a Cassini state, a resonance between spin precession and orbital precession. Obliquity tides might be the cause of the anomalously
Matthew J. Holman, Joshua N. Winn
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A New Window into Planet Formation and Migration: Refractory-to-Volatile Elemental Ratios in Ultra-hot Jupiters [PDF]
, 2020 A primary goal of exoplanet characterization is to use a planet’s current composition to understand how that planet formed. For example, the C/O ratio has long been recognized as carrying important information on the chemistry of volatile species ...
J. Lothringer +5 more
semanticscholar +1 more source
Hot-Jupiters and hot-Neptunes: A common origin? [PDF]
Astronomy & Astrophysics, 2005 We compare evolutionary models for close-in exoplanets coupling irradiation and evaporation due respectively to the thermal and high energy flux of the parent star with observations of recently discovered new transiting planets. The models provide an overall good agreement with observations, although at the very limit of the quoted error bars of OGLE ...
F. Allard +6 more
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