Results 11 to 20 of about 4,639 (216)
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 ...
Schönau, Laurent +16 more
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Formation of Inner Planets in the Presence of a Cold Jupiter: Orbital Evolution and Relative Velocities of Planetesimals [PDF]
The Astrophysical Journal, 2023 We investigate the orbital evolution of planetesimals in the inner disk in the presence of nebula gas and a (proto-) cold Jupiter. By varying the mass, eccentricity, and semimajor axis of the planet, we study the dependence of the relative velocities of ...
Kangrou Guo, Eiichiro Kokubo
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On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability
The Planetary Science JournalBorn as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history.
Anastasios Gkotsinas +4 more
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Episodic planetesimal disruptions triggered by dissipation of gas disk [PDF]
Nature CommunicationsCatastrophic disruptions of planetesimals occur in high-velocity collisions. Radioisotope dating of planetesimal disruption events recorded in meteorites confirms frequent catastrophic collisions in the first 10 Myr of the Solar System, reflecting a ...
Kang Shuai, Li-Yong Zhou, Hejiu Hui
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Size–Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids
The Astrophysical JournalThe isotopic composition of meteorites linked to S-complex asteroids has been used to suggest that these asteroids originated in the terrestrial planet’s region, i.e., within 1.5 au, and later got implanted into the main asteroid belt (MAB).
Rogerio Deienno +5 more
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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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From stellar nebula to planetesimals [PDF]
, 2014 Context. Solar and extrasolar comets and extrasolar planets are the subject of numerous studies in order to determine their chemical composition and internal structure. In the case of planetesimals, their compositions are important as they govern in part
Amaury Thiabaud +14 more
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Ice Sublimation in Planetesimals Formed at the Outward Migrating Snowline
The Astrophysical Journal Letters, 2023 Isotopic studies of meteorites suggest that planetesimals were formed as two distinct populations: noncarbonaceous (NC) and carbonaceous (CC) reservoirs.
Zhongtian Zhang
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Pore Network Modeling of Core Forming Melts in Planetesimals
Frontiers in Earth Science, 2020 Early in the history of the solar system, planetesimals were differentiated into metallic cores. In some planetesimals, this differentiation took place by percolation of the denser core forming liquid through a lighter solid silicate matrix. A key factor
Giulio F. D. Solferino +2 more
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