Results 1 to 10 of about 10,677 (209)

An Analytical Theory for the Growth from Planetesimals to Planets by Polydisperse Pebble Accretion [PDF]

open access: goldThe Astrophysical Journal, 2023
Pebble accretion is recognized as a significant accelerator of planet formation. Yet only formulae for single-sized (monodisperse) distribution have been derived in the literature.
Wladimir Lyra   +3 more
doaj   +2 more sources

Kozai effect on planetesimal accretion in highly inclined binaries [PDF]

open access: diamondEPJ Web of Conferences, 2011
Planet formation in highly inclined binaries is a complex issue. The Kozai mechanism plays an important role in this situation, since it will lead to high eccentricity and high relative impact velocity of planetesimals, thus hinder the planetesimal ...
Zhou J.-L., Lin D.N.C., Zhao G.
doaj   +2 more sources

Planetary migration in evolving planetesimals discs [PDF]

open access: green, 2003
In the current paper, we further improved the model for the migration of planets introduced in Del Popolo et al. (2001) and extended to time-dependent planetesimal accretion disks in Del Popolo and Eksi (2002). In the current study, the assumption of Del
A. DEL POPOLO   +12 more
core   +2 more sources

Recurrent planetesimal formation in an outer part of the early solar system [PDF]

open access: yesScientific Reports
The formation of planets in our solar system encompassed various stages of accretion of planetesimals that formed in the protoplanetary disk within the first few million years at different distances to the sun.
Wladimir Neumann   +3 more
doaj   +2 more sources

Collisional Processes in Extrasolar Planetsimal Disks - Dust Clumps in Fomalhaut's Debris Disk [PDF]

open access: bronze, 2002
This paper presents a model for the outcome of collisions between planetesimals in a debris disk and assesses the impact of collisional processes on the structure and size distribution of the disk. The model is presented by its application to Fomalhaut's
Dent, W. R. F., Wyatt, M. C.
core   +5 more sources

Early planetesimal differentiation and late accretion shaped Earth’s nitrogen budget [PDF]

open access: yesNature Communications
The relative roles of protoplanetary differentiation versus late accretion in establishing Earth’s life-essential volatile element inventory are being hotly debated.
Wenzhong Wang   +3 more
doaj   +2 more sources

Early Solar System Turbulence Constrained by High Oxidation States in the Oldest Noncarbonaceous Planetesimals

open access: goldThe Planetary Science Journal
Early solar system (SS) planetesimals constitute the parent bodies of most meteorites investigated today. Nucleosynthetic isotope anomalies of bulk meteorites have revealed a dichotomy between noncarbonaceous (NC) and carbonaceous (CC) groups ...
Teng Ee Yap   +2 more
doaj   +2 more sources

A Long‐Lived Planetesimal Dynamo Powered by Core Crystallization

open access: yesGeophysical Research Letters, 2021
The existence of numerous iron meteorite groups indicates that some planetesimals underwent melting that led to metal‐silicate segregation, sometimes producing metallic cores.
Clara Maurel   +6 more
doaj   +1 more source

Size Ranges of Magnetic Domain States in Tetrataenite

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Paleomagnetic studies of meteorites provide unique constraints on the evolution of magnetic fields in the early solar system. These studies rely on the identification of magnetic minerals that can retain stable magnetizations over ≳4.5 billion years (Ga).
Elias N. Mansbach   +5 more
doaj   +1 more source

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