Results 1 to 10 of about 505 (181)
Low strength and a shared size distribution connect the hot and cold Kuiper belt populations [PDF]
Nature CommunicationsUnderstanding how the observed size distribution of Kuiper Belt objects emerged from the primordial planetesimal population remains a major challenge in planetary science.
P. G. Benavidez +3 more
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Recurrent planetesimal formation in an outer part of the early solar system [PDF]
Scientific ReportsThe 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
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Early planetesimal differentiation and late accretion shaped Earth’s nitrogen budget [PDF]
Nature CommunicationsThe 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
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A Long‐Lived Planetesimal Dynamo Powered by Core Crystallization
Geophysical 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
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Size Ranges of Magnetic Domain States in Tetrataenite
Geochemistry, 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
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Effect of the Planetesimal Belt on the Dynamics of the Restricted Problem of 2 + 2 Bodies
Applied Sciences, 2022 In this paper, we study the existence and stability of collinear and noncollinear equilibrium points within the frame of the perturbed restricted problem of 2 + 2 bodies by a planetesimal belt.
Govind Mahato +4 more
doaj +1 more source
The Astrophysical Journal, 2023 We model the early stages of planet formation in the solar system, including continual planetesimal formation, and planetesimal and pebble accretion onto planetary embryos in an evolving disk driven by a disk wind.
John Chambers
doaj +1 more source
Planetesimal Population Synthesis: Pebble Flux-regulated Planetesimal Formation [PDF]
The Astrophysical Journal, 2019 Abstract We propose an expression for a local planetesimal formation rate proportional to the instantaneous radial pebble flux. The result—a radial planetesimal distribution—can be used as an initial condition to study the formation of planetary embryos.
Christian T. Lenz +2 more
openaire +3 more sources
Planetesimal Initial Mass Functions Following Diffusion-regulated Gravitational Collapse
The Astrophysical Journal, 2023 The initial mass function (IMF) of planetesimals is of key importance for understanding the initial stages of planet formation, yet theoretical predictions so far have been insufficient in explaining the variety of IMFs found in simulations.
Konstantin Gerbig, Rixin Li
doaj +1 more source
Astronomy & Astrophysics, 2023 Planetesimals are born fragile and are subject to destruction by wind erosion as they move through the gas of a protoplanetary disk. In microgravity experiments, we determined the shear stress necessary for erosion of a surface consisting of 1 mm dust pebbles down to 1 Pa ambient pressure. This is directly applicable to protoplanetary disks.
L. Schönau +7 more
openaire +3 more sources