Results 71 to 80 of about 768 (162)

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

The Bulk Densities of Small Solar System Bodies as a Probe of Planetesimal Formation

The Astrophysical Journal
Constraining the formation processes of small solar system bodies is crucial for gaining insights into planetesimal formation. Their bulk densities, determined by their compressive strengths, offer valuable information about their formation history.
Misako Tatsuuma, Akimasa Kataoka, Hidekazu Tanaka, Tristan Guillot   +3 more
doaj   +1 more source

Phyllosilicate Infrared Spectral Features as Tracers of Aqueous Alteration in CM Chondrites and Implications for Remote Sensing of Hydrated Asteroids

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract CM (Mighei‐type) carbonaceous chondrites host abundant OH/H2O‐bearing phyllosilicates formed from water‐rock reactions in primitive planetesimals. Their infrared (IR) spectral features resemble those of C‐type asteroids, making laboratory analyses of CMs essential for interpreting asteroid observations.
W. M. Lawrence, B. L. Ehlmann
wiley   +1 more source

Evolution of Terrestrial Planetary Bodies and Implications for Habitability

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract The terrestrial planetary bodies of our solar system—Mercury, Venus, Earth, and Mars—share a common origin through nebular accretion and early magma ocean differentiation, yet they diverged significantly in geological evolution, tectonic regimes, and habitability.
Peter A. Cawood, Eva E. Stüeken, Priyadarshi Chowdhury, Chris J. Hawkesworth, Jacob A. Mulder   +4 more
wiley   +1 more source

The Multifaceted Planetesimal Formation Process [PDF]

, 2014
Accumulation of dust and ice particles into planetesimals is an important step in the planet formation process. Planetesimals are the seeds of both terrestrial planets and the solid cores of gas and ice giants forming by core accretion. Left-over planetesimals in the form of asteroids, trans-Neptunian objects and comets provide a unique record of the ...
Johansen, Anders, Blum, Jürgen, Tanaka, Hidekazu, Ormel, Chris, Bizzarro, Martin, Rickman, Hans   +5 more
openaire   +3 more sources

Planet formation in slightly inclined binary systems

EPJ 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

Tidal Disruption of Planetesimals from an Eccentric Debris Disk Following a White Dwarf Natal Kick

The Astrophysical Journal Letters
The surfaces of many white dwarfs are polluted by metals, implying a recent accretion event. The tidal disruption of planetesimals is a viable source of white dwarf pollution and offers a unique window into the composition of exoplanet systems.
Tatsuya Akiba, Selah McIntyre, Ann-Marie Madigan   +2 more
doaj   +1 more source

Effects of stellar X-ray photoevaporation on planetesimal formation via the streaming instability

Astronomy & Astrophysics
Context. The formation of planetesimals via the streaming instability (SI) is a crucial step in planet formation, yet its triggering conditions and efficiency are highly sensitive to both disk properties and specific evolutionary processes. Aims.
Ying Xuchu, Liu Beibei, Yang Haifeng, Drążkowska Joanna, Stammler Sebastian M., Zhu Zhaohuan, Eriksson Linn E.J., Deng Hongping, Liu Bin, Chen Ping   +9 more
doaj   +1 more source

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

The 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

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

Nature 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, Daniel R. Dunlap, Carl B. Agee, Meenakshi Wadhwa, Daniel Coleff, Karen Ziegler, Ryan Zeigler, Francis M. McCubbin   +7 more
doaj   +1 more source