Results 81 to 90 of about 2,834 (210)

The Fuzzy Cores of Jupiter and Saturn

AGU Advances, Volume 5, Issue 2, April 2024.
Abstract New interior models of Jupiter and Saturn suggest that both planets have “fuzzy cores.” These cores should be viewed as central regions that are enriched with heavy elements but are not distinct from the rest of the deep interior. These cores may contain large amounts of hydrogen and helium though small pure heavy‐element cores may also exist.
Ravit Helled, David J. Stevenson
wiley   +1 more source

Outflow Driven by a Protoplanet Embedded in the TW Hya Disk

The Astrophysical Journal Letters
Gas giant planets are formed by gas accretion onto planetary cores in protoplanetary disks. However, direct evidence of this process is still lacking, limiting our understanding of planetary formation processes.
Tomohiro C. Yoshida, Hideko Nomura, Charles J. Law, Richard Teague, Yuhito Shibaike, Kenji Furuya, Takashi Tsukagoshi   +6 more
doaj   +1 more source

On the tidal interaction between protoplanets and the protoplanetary disk. III - Orbital migration of protoplanets

The Astrophysical Journal, 1986
The tidal interaction between a protoplanet and a gaseous protoplanetary disk is investigated, and the dynamical evolution of the disk and the orbital migration of the protoplanet in a self-consistent manner is considered. It is shown that the orbital migration of a protoplanet does not suppress the tendency for tidal truncation in the vicinity of its ...
D. N. C. Lin, John Papaloizou
openaire   +1 more source

Discussion of the unique “eclogitic” clast reported from Northwest Africa 801 (CR2) and the possibility of ejection of foundered crust from deep in a molten Moon‐sized projectile

Meteoritics &Planetary Science, Volume 59, Issue 4, Page 910-920, April 2024.
Abstract A unique 2 mm‐wide clast of fine‐grained garnet–omphacite peridotite with chondritic chemistry was reported from the CR2 chondrite Northwest Africa 801 by Hiyagon et al. (2016, Geochimica et Cosmochimica Acta, 186, 32–48). Those authors described the clast as eclogitic and inferred from its mineral compositions that the rock formed quickly ...
Edward R. D. Scott, Ian S. Sanders, Erik Asphaug, Emma L. Tomlinson   +3 more
wiley   +1 more source

On the orbital evolution and growth of protoplanets embedded in a gaseous disc [PDF]

, 1999
We present a new computation of the linear tidal interaction of a protoplanetary core with a thin gaseous disc in which it is fully embedded. For the first time a discussion of the orbital evolution of cores with eccentricity (e) significantly larger ...
Larwood, J. D., Papaloizou, J. C. B.
core   +3 more sources

SCExAO/CHARIS Near-infrared Scattered-light Imaging and Integral Field Spectropolarimetry of the AB Aurigae Protoplanetary System

The Astrophysical Journal
We analyze near-infrared integral field spectropolarimetry of the AB Aurigae protoplanetary disk and protoplanet (AB Aur b), obtained with SCExAO/CHARIS in 22 wavelength channels covering the J , H , and K passbands ( λ _0 = 1.1–2.4 μ m) over angular ...
Erica Dykes, Thayne Currie, Kellen Lawson, Miles Lucas, Tomoyuki Kudo, Minghan Chen, Olivier Guyon, Tyler D. Groff, Julien Lozi, Jeffrey Chilcote, Timothy D. Brandt, Sebastien Vievard, Nour Skaf, Vincent Deo, Mona El Morsy, Danielle Bovie, Taichi Uyama, Carol Grady, Michael Sitko, Jun Hashimoto, Frantz Martinache, Nemanja Jovanovic, Motohide Tamura, N. Jeremy Kasdin   +23 more
doaj   +1 more source

Accretion Rates of Planetesimals by Protoplanets Embedded in Nebular Gas

, 2009
When protoplanets growing by accretion of planetesimals have atmospheres, small planetesimals approaching the protoplanets lose their energy by gas drag from the atmospheres, which leads them to be captured within the Hill sphere of the protoplanets.
Benvenuto, Bodenheimer, Chambers, Chambers, Chambers, Dones, D’Angelo, Fortney, Greenzweig, Greenzweig, Hubickyj, Ida, Ida, Ida, Ikoma, Inaba, Inaba, Inaba, Kary, Kary, Keiji Ohtsuki, Kokubo, Kokubo, Korycansky, Masset, Mizuno, Movshovitz, Nakazawa, Nishida, Ohtsuki, Ohtsuki, Ohtsuki, Podolak, Pollack, Pollack, Rafikov, Sasaki, Stevenson, Takayuki Tanigawa, Tanaka, Tanaka, Ward, Ward, Wetherill, Wetherill, Ćuk   +45 more
core   +1 more source

Diversity in Planetary Architectures from Pebble Accretion: Water Delivery to the Habitable Zone with Pebble Snow

The Astrophysical Journal
“Pebble snow” describes a planet formation mechanism where icy pebbles in the outer disk reach inner planet embryos as the water-ice line evolves inward.
Sean McCloat, Gijs D. Mulders, Sherry Fieber-Beyer   +2 more
doaj   +1 more source

Formation of Jupiter using opacities based on detailed grain physics

, 2010
Numerical simulations, based on the core-nucleated accretion model, are presented for the formation of Jupiter at 5.2 AU in 3 primordial disks with three different assumed values of the surface density of solid particles.
Bodenheimer, Peter, Lissauer, Jack J., Movshovitz, Naor, Podolak, Morris   +3 more
core   +1 more source

Rapid Protoplanet Formation in Vortices: Three-dimensional Local Simulations with Self-gravity

The Astrophysical Journal Letters
Disk vortices, seen in numerical simulations of protoplanetary disks and found observationally in Atacama Large Millimeter/submillimeter Array and Very Large Array images of these objects, are promising sites for planet formation given their pebble ...
Wladimir Lyra, Chao-Chin Yang, Jacob B. Simon, Orkan M. Umurhan, Andrew N. Youdin   +4 more
doaj   +1 more source