Results 81 to 90 of about 1,415 (183)

A Possible Mechanism to Explain the Prograde Equatorial Jet of a Jupiter-like Gaseous Giant

The Astrophysical Journal Letters
Gaseous giants are characterized by their deep atmospheres, which lack clear boundaries with their interiors; therefore, their internal states could directly influence atmospheric dynamics. So far, most modeling studies have considered deep convection as
Yuchen Lian, Pengshuo Duan, Dali Kong
doaj   +1 more source

Constraints on the Long-term Existence of Dilute Cores in Giant Planets

The Planetary Science Journal
Post-Cassini ring seismology analysis suggests the existence of a stable stratification inside Saturn that extends from the center to ∼60% of its radius, in what is recognized today as Saturn’s dilute core.
A. Tulekeyev, P. Garaud, B. Idini, J. J. Fortney   +3 more
doaj   +1 more source

Penetrative Convection in Rotating Tilted f-plane with Multiple Radiative and Convective Layers

The Astrophysical Journal
In this paper, we conducted a linear instability analysis to investigate penetrative convection in rotating, tilted f -planes with multiple convectively stable and unstable layers. Our findings indicate that penetrative distance decreases with increasing
Sethulakshmy Edathara Sreenivasan, Tao Cai   +1 more
doaj   +1 more source

Climate modeling of giant planets : the Saturnian seasonal stratosphere

, 2008
textAstronom
Strong, Shadrian Brittany, 1980-
core  

On the Meaning of the Dynamo Radius in Giant Planets with Stable Layers

The Astrophysical Journal
Current structure models of Jupiter and Saturn suggest that helium becomes immiscible in hydrogen in the outer part of the planets’ electrically conducting regions.
Paula N. Wulff, Hao Cao, Jonathan M. Aurnou   +2 more
doaj   +1 more source

Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534 b

The Astrophysical Journal Letters
We report the detection of thermal emission from and confirm the planetary nature of WD 1856+534 b, the first transiting planet known to orbit a white dwarf (WD) star.
Mary Anne Limbach, Andrew Vanderburg, Ryan J. MacDonald, Kevin B. Stevenson, Sydney Jenkins, Simon Blouin, Emily Rauscher, Rachel Bowens-Rubin, Elena Gallo, James Mang, Caroline V. Morley, David K. Sing, Christopher O’Connor, Alexander Venner, Siyi Xu   +14 more
doaj   +1 more source

Planet formation and disc dynamics in stellar clusters and misaligned binary systems

, 2009
PhDIn this thesis I investigate the formation and dynamics of planets and protoplanetary discs, subject to external gravitational perturbations.
Fragner, Moritz Matthias
core  

The JWST Weather Report from the Isolated Exoplanet Analog SIMP 0136+0933: Pressure-dependent Variability Driven by Multiple Mechanisms

The Astrophysical Journal Letters
Isolated planetary-mass objects share their mass range with planets but do not orbit a star. They lack the necessary mass to support fusion in their cores and thermally radiate their heat from formation as they cool, primarily at infrared wavelengths ...
Allison M. McCarthy, Johanna M. Vos, Philip S. Muirhead, Beth A. Biller, Caroline V. Morley, Jacqueline Faherty, Ben Burningham, Emily Calamari, Nicolas B. Cowan, Kelle L. Cruz, Eileen Gonzales, Mary Anne Limbach, Pengyu Liu, Evert Nasedkin, Genaro Suárez, Xianyu Tan, Cian O’Toole, Channon Visscher, Niall Whiteford, Yifan Zhou   +19 more
doaj   +1 more source

Disentangling the Early History of the Solar System

, 2020
Giant planets form out of a disc of gas and dust – called protoplanetary disc -- that surrounded the protosun at the time of its formation. While the cores of giant planets were growing via planetesimal and pebble accretion, they started to interact with
Pirani, Simona
core   +1 more source

The Solar System could have formed in a low-viscosity disc: A dynamical study from giant planet migration to the Nice model

Context. In the context of low-viscosity protoplanetary discs (PPDs), the formation scenarios of the Solar System should be revisited. In particular, the Jupiter-Saturn pair has been shown to lock in the 2:1 mean motion resonance while migrating ...
Griveaud, P., A. Morbidelli, Crida, A., Petit, A. C., Morbidelli, A., P. Griveaud, A. C. Petit, E. Lega, Lega, E., A. Crida   +9 more
core   +2 more sources