Results 111 to 120 of about 4,639 (216)

The Edges of Planetary Systems: Falling Off the Kuiper Cliff in a Dissipating Gas Disk

open access: yesThe Astrophysical Journal
Probably the last planetesimals to have formed from dust in the solar nebula are cold classical Kuiper Belt Objects (CCKBOs). To the extent that they are isolated and unchanged since birth, CCKBOs offer direct insights into nebular processes.
Rixin Li, Eugene Chiang
doaj   +1 more source

Planet formation in slightly inclined binary systems

open access: yesEPJ Web of Conferences, 2011
One of the major problems of planet formation in close binary systems, such as α Centauri AB, is the formation of planetary embryos or cores by mutual accretion of km-sized planetesimals.
Ge J., Xie J.-W., Zhou J.-L.
doaj   +1 more source

A low-temperature origin for the planetesimals that formed Jupiter [PDF]

open access: yes, 1999
The four giant planets in the Solar System have abundances of 'metals' (elements heavier than helium), relative to hydrogen, that are much higher than observed in the Sun. In order to explain this, all models for the formation of these planets rely on an
Niemann, Hasso Bernhard Otto   +13 more
core   +1 more source

2026 Leonard Medal for Marc Chaussidon

open access: yes
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S552-S555, August 2026.
François Robert
wiley   +1 more source

Massive Debris Disks May Hinder Secular Stirring by Planetary Companions: An Analytic Proof of Concept

open access: yesThe Astrophysical Journal
Debris disks or exo-Kuiper belts, detected through their thermal or scattered emission from their dusty components, are ubiquitous around main-sequence stars.
Antranik A. Sefilian
doaj   +1 more source

Oligarchic Growth of Protoplanets in Planetesimal Rings

open access: yesThe Astrophysical Journal
In the standard planet formation scenario, planetesimals are assumed to form throughout the protoplanetary disk and to be smoothly distributed in the radial direction except for the snowline.
Yuki Kambara, Eiichiro Kokubo
doaj   +1 more source

Vega's hot dust from icy planetesimals scattered inward by an outward-migrating planetary system

open access: yes, 2014
International audienceVega has been shown to host multiple dust populations, including both hot exo-zodiacal dust at sub-AU radii and a cold debris disk extending beyond 100 AU.
Bonsor, Amy, Raymond, Sean N.
core   +1 more source

Silica-rich volcanism in the early solar system dated at 4.565 Ga

open access: yesNature Communications, 2018
Achondritic meteorites can record volcanism and crust formation on planetesimals in the early Solar System. Here, the authors date the Northwest Africa 11119 meteorite with an Al-Mg age of 4564.8 ± 0.3 Ma indicating that this is the earliest evidence of ...
Poorna Srinivasan   +7 more
doaj   +1 more source

The Formation of Planetesimals through Gravitational Collapse

open access: yes
Thesis (Ph.D.)--Michigan State University. Earth and Environmental Sciences \u2013 Doctor of Philosophy, 2026To form an effective narrative of the solar system's origins and the formation of the planets, it is crucial to understand the creation of key ...
Barnes, Jackson Taylor
core   +1 more source

Turbulence Inhibits Planetesimal Formation in Class 0/I Disks Subject to Infall

open access: yesThe Astrophysical Journal
There is growing evidence that planet formation begins early, within the ≲1 Myr Class 0/I phase, when infall dominates disk dynamics. Our goal is to determine if Class 0/I disks reach the conditions needed to form planetesimals (∼100 km planet building ...
Daniel Carrera   +7 more
doaj   +1 more source

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