Results 1 to 10 of about 14,974 (190)

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

Possible Ribose Synthesis in Carbonaceous Planetesimals. [PDF]

open access: yesLife (Basel), 2022
The origin of life might be sparked by the polymerization of the first RNA molecules in Darwinian ponds during wet-dry cycles. The key life-building block ribose was found in carbonaceous chondrites.
Paschek K   +7 more
europepmc   +2 more sources

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

open access: yesSci Rep
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.
Neumann W, Ma N, Bouvier A, Trieloff M.
europepmc   +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

Size–Frequency Distribution of Terrestrial Leftover Planetesimals and S-complex Implanted Asteroids

open access: goldThe Astrophysical Journal
The 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
doaj   +2 more sources

Chondrule formation by collisions of planetesimals containing volatiles triggered by Jupiter's formation. [PDF]

open access: yesSci Rep
Chondrules are spherical or subspherical particles of crystallized or partially crystallized liquid silicates that constitute large-volume fractions of most chondritic meteorites.
Sirono SI, Turrini D.
europepmc   +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

Formation of Inner Planets in the Presence of a Cold Jupiter: Orbital Evolution and Relative Velocities of Planetesimals

open access: yesThe 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
doaj   +1 more source

Ice Sublimation in Planetesimals Formed at the Outward Migrating Snowline

open access: yesThe 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
doaj   +1 more source

Pore Network Modeling of Core Forming Melts in Planetesimals

open access: yesFrontiers 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
doaj   +1 more source

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