Results 11 to 20 of about 104,797 (298)

Ariel planetary interiors White Paper [PDF]

open access: yesExperimental Astronomy, 2021
AbstractThe recently adopted Ariel ESA mission will measure the atmospheric composition of a large number of exoplanets. This information will then be used to better constrain planetary bulk compositions. While the connection between the composition of a planetary atmosphere and the bulk interior is still being investigated, the combination of the ...
Helled, Ravit   +12 more
openaire   +11 more sources

Double superionicity in icy compounds at planetary interior conditions [PDF]

open access: yesNature Communications, 2023
The elements hydrogen, carbon, nitrogen and oxygen are assumed to comprise the bulk of the interiors of the ice giant planets Uranus, Neptune, and sub-Neptune exoplanets.
Kyla de Villa   +2 more
doaj   +2 more sources

Machine-learning Inferences of the Interior Structure of Rocky Exoplanets from Bulk Observational Constraints

open access: yesThe Astrophysical Journal Supplement Series, 2023
Characterizing the interiors of rocky exoplanets is important to understand planetary populations and further investigate planetary habitability. New observable constraints and inference techniques have been explored for this purpose.
Yong Zhao, Dongdong Ni, Zibo Liu
doaj   +1 more source

A Reanalysis of the Composition of K2-106b: An Ultra-short-period Super-Mercury Candidate

open access: yesThe Astronomical Journal, 2023
We present a reanalysis of the K2-106 transiting planetary system, with a focus on the composition of K2-106b, an ultra-short-period, super-Mercury candidate. We globally model existing photometric and radial velocity data and derive a planetary mass and
Romy Rodríguez Martínez   +11 more
doaj   +1 more source

Relation of Gravity, Winds, and the Moment of Inertia of Jupiter and Saturn

open access: yesThe Planetary Science Journal, 2023
We study the relationship of zonal gravity coefficients, J _2 _n , zonal winds, and axial moment of inertia (MoI) by constructing models for the interiors of giant planets.
Burkhard Militzer, William B. Hubbard
doaj   +1 more source

Strong Resemblance between Surface and Deep Zonal Winds inside Jupiter Revealed by High-degree Gravity Moments

open access: yesThe Astrophysical Journal, 2023
Jupiter’s atmosphere interior is a coupled fluid dynamical system strongly influenced by the rapid background rotation. While the visible atmosphere features east–west zonal winds on the order of ∼100 m s ^−1 , zonal flows in the dynamo region are ...
Hao Cao   +7 more
doaj   +1 more source

Magnesium oxide-water compounds at megabar pressure and implications on planetary interiors

open access: yesNature Communications, 2023
Magnesium Oxide and water are abundant in the interior of planets. Here, the authors predict three new MgO-H2O compounds: Mg2O3H2, MgO3H4 and MgO4H6, and they exhibit superionic behavior in planetary interior conditions.
Shuning Pan   +9 more
doaj   +1 more source

Timing and Abundance of Clathrate Formation Control Ocean Evolution in Outer Solar System Bodies: Challenges of Maintaining a Thick Ocean within Pluto

open access: yesThe Planetary Science Journal, 2023
Clathrate hydrates may represent a sizable fraction of material within the icy shells of Kuiper Belt objects and icy moons. They influence the chemical and thermal evolution of subsurface oceans by locking volatiles into the ice shell and by providing ...
Samuel W. Courville   +5 more
doaj   +1 more source

The Effects of Rotation Rate on Deep Convection in Giant Planets with Small Solid Cores [PDF]

open access: yes, 2006
We study how the pattern of thermal convection and differential rotation in the interior of a giant gaseous planet is affected by the presence of a small solid core as a function of the planetary rotation rate.
Aurnou   +15 more
core   +2 more sources

Dynamical Measurements of the Interior Structure of Exoplanets [PDF]

open access: yes, 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'
Batygin, Konstantin, Becker, Juliette C.
core   +3 more sources

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