Results 91 to 100 of about 15,247 (235)

Initial mass function of planetesimals formed by the streaming instability

open access: yes, 2016
The streaming instability is a mechanism to concentrate solid particles into overdense filaments that undergo gravitational collapse and form planetesimals.
Johansen, Anders   +2 more
core   +1 more source

Understanding Planetesimals

open access: yesEos, Transactions American Geophysical Union, 2014
Planetesimals represent turning points in planetary formation, when the materials required for building planets are first incorporated into bodies with radii from tens to hundreds of kilometers or larger, and are sometimes differentiated into metallic cores and silicate mantles. These early celestial bodies are the accretionary step between the dust of
openaire   +1 more source

The effect of pressure on dihedral angle between liquid Fe‐S and orthopyroxene: Implication for percolative core formation in planetesimals and planetary embryos

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 12, Page 2811-2827, December 2025.
Abstract During precursor stages of planet formation, many planetesimals and planetary embryos are considered to have differentiated, forming an iron‐alloy core and silicate mantle. Percolation of liquid iron‐alloy in solid silicates is one of the major possible differentiation processes in these small bodies.
Takumi Miura   +5 more
wiley   +1 more source

High-resolution simulations of the final assembly of Earth-like planets 2: water delivery and planetary habitability

open access: yes, 2007
The water content and habitability of terrestrial planets are determined during their final assembly, from perhaps a hundred 1000-km "planetary embryos" and a swarm of billions of 1-10 km "planetesimals." During this process, we assume that water-rich ...
Lunine, Jonathan I.   +2 more
core   +1 more source

Boulders on Bennu: Low Apparent Thermal Inertia Caused by Thermal Fatigue Fractures

open access: yesGeophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Boulders covering the surfaces of asteroids Bennu and Ryugu have apparent thermal inertias substantially lower than their meteorite analogs. This has led to the inference that boulders on Bennu may be unlike any known meteorite. However, samples returned from Ryugu have a thermal inertia 3.5 times higher than the apparent thermal inertia ...
Catherine M. Elder
wiley   +1 more source

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

open access: yesThe 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   +3 more
doaj   +1 more source

The Feeding Zones of Terrestrial Planets and Insights into Moon Formation

open access: yes, 2015
[Abridged] We present an extensive suite of terrestrial planet formation simulations that allows quantitative analysis of the stochastic late stages of planet formation. We quantify the feeding zone width, Delta a, as the mass-weighted standard deviation
Cowan, Nicolas B., Kaib, Nathan A.
core   +1 more source

Felsic Magmatism on Venus Generated by Crustal Recycling and Melting

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The observation of low viscosity lava flows and shield volcanoes on radar images, combined with X‐ray fluorescence analyses performed by Soviet landers, strongly suggests that Venus's crust is primarily basaltic. However, near‐infrared emissivity data from the Galileo and Venus Express missions indicate that crustal plateaus may be ...
Max Collinet   +4 more
wiley   +1 more source

Models of Giant Planet formation with migration and disc evolution

open access: yes, 2004
We present a new model of giant planet formation that extends the core-accretion model of Pollack etal (1996) to include migration, disc evolution and gap formation.
Alexander   +51 more
core   +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

Home - About - Disclaimer - Privacy