Results 81 to 90 of about 26,344 (179)

Detailed Calculations of the Efficiency of Planetesimal Accretion in the Core-accretion Model. III. The Contribution of Planetesimals beyond Saturn

The Astrophysical Journal
Continuing our initiative on advancing the calculations of planetesimal accretion in the core-accretion model, we present here the results of our recent study of the contributions of planetesimals around and beyond the orbit of Saturn.
Nader Haghighipour, Morris Podolak, Esther Podolak   +2 more
doaj   +1 more source

Capture and escape in the elliptic restricted three-body problem

, 2004
Several families of irregular moons orbit the giant planets. These moons are thought to have been captured into planetocentric orbits after straying into a region in which the planet's gravitation dominates solar perturbations (the Hill sphere).
D. Farrelly, Froeschle, S. A. Astakhov
core   +2 more sources

The Library of Exoplanet Atmospheric Composition Measurements: Population-level Trends in Exoplanet Composition with ExoComp

The Astronomical Journal
The present-day bulk elemental composition of an exoplanet can provide insight into a planet’s formation and evolutionary history. Such information is now being measured for dozens of planets with state-of-the-art facilities using Bayesian atmosphere ...
Joshua D. Lothringer, Nataliea Lowson, Guangwei Fu   +2 more
doaj   +1 more source

The limits of simulating gas giant entry at true gas composition and true flight velocities in an expansion tube [PDF]

, 2014
Due to high entry velocities when entering gas giant planets in the solar system (20-50 km/s), simulating gas giant entry in ground testing facilities is a complex problem.
Gildfind, David, James, Christopher, McIntyre, Tim, Morgan, Richard   +3 more
core  

Evolution of Semiconvective Staircases in Rotating Flows: Consequences for Fuzzy Cores in Giant Planets

The Astrophysical Journal Letters
Recent observational constraints on the internal structure of Jupiter and Saturn suggest that these planets have “fuzzy” cores, i.e., gradients of the concentration of heavy elements that might span a large fraction of the planet’s radius.
J. R. Fuentes, Bradley W. Hindman, Adrian E. Fraser, Evan H. Anders   +3 more
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

Super-Earths: A New Class of Planetary Bodies

, 2011
Super-Earths, a class of planetary bodies with masses ranging from a few Earth-masses to slightly smaller than Uranus, have recently found a special place in the exoplanetary science.
Armitage P. J., Christensen U. R., Clubb K., Dobrovolskis A. R., Fogg M. J., Ford E.B., Goldreich P., Haghighipour N., Haghighipour N., Hatzes A.P., Heng K., Michael S., Nader Haghighipour, Safronov V. S., Smoluchowski M. V., Sotin C., Stamenkovic V., Stamenkovic V., Steffen J. H., Swift D. C., Tackley P. J., Weidenschilling S. J.   +21 more
core   +1 more source

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

The Formation of Planets

, 1999
This paper reviews the dynamics of the growth of solid particles from micron-sized dust grains to planets in protostellar accretion disks.
Ruden, Steven P.
core   +2 more sources

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