Results 61 to 70 of about 3,499 (221)

Modeling Carbon Outgassing from Chondritic Planetesimals

The Planetary Science Journal
The thermochemical evolution of planetesimals is an underprobed stage of volatile delivery to terrestrial planets during their formation, and may contribute to the volatile depletion of the Earth relative to primitive chondrites.
Bo Peng, Diana Valencia
doaj   +1 more source

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

The Formation of Planetesimals

The Astrophysical Journal, 1973
Four stages in the accretion of planetesimals are described. The initial stage is the condensation of dust particles from the gaseous solar nebula as it cools. These dust particles settle into a thin disk which is gravitationally unstable. A first generation of planetesimals, whose radii range up to about 0.1 km, form from the dust disk by direct ...
Peter Goldreich, William R. Ward
openaire   +1 more source

Potential of VIS‐IR imaging spectroscopy and SEM‐EDS and EMPA to map the mineralogical composition of NWA 7317 (CR6)

Meteoritics &Planetary Science, Volume 61, Issue 6, Page 1026-1044, June 2026.
Abstract Asteroid compositional analysis relies on comparing reflectance spectra with laboratory data from well‐characterized meteorites. To advance this comparison, we performed a comprehensive laboratory analysis on a slab of the Northwest Africa (NWA) 7317—CR6 carbonaceous chondrite.
Simone Pascucci, Tiberio Cuppone, Martina Casalini, Simone De Angelis, Antonio Lettino, Angelo Palombo, Eliana La Francesca, Gianrico Filacchione, Maria Cristina De Sanctis, Anna Galiano, Giovanni Pratesi   +10 more
wiley   +1 more source

Composition of inner main-belt planetesimals

, 2022
International audience<BR /> Aims: We carried out a spectroscopic survey in order to investigate the composition of 64 asteroids of the inner main belt, which are leftovers of the original planetesimals of our Solar System (we call them inner main ...
Moskovitz, Nicholas A., J. Bourdelle de Micas, Ochner, P., S. Fornasier, W. Grundy, Bourdelle de Micas, J., Fornasier, Sonia, Delbo, Marco, G. van Belle, Grundy, Will M., P. Ochner, C. Avdellidou, M. Delbo, N. Moskovitz, Avdellidou, C., van Belle, Gerard T.   +15 more
core   +1 more source

APPLICATION OF GAS DYNAMICAL FRICTION FOR PLANETESIMALS. II. EVOLUTION OF BINARY PLANETESIMALS [PDF]

The Astrophysical Journal, 2016
ABSTRACT One of the first stages of planet formation is the growth of small planetesimals and their accumulation into large planetesimals and planetary embryos. This early stage occurs long before the dispersal of most of the gas from the protoplanetary disk.
Grishin, Evgeni, Perets, Hagai B.
openaire   +2 more sources

Resolving the Internal Magnetic Domain Structure of Cloudy Zone Tetrataenite

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Recent advances in magnetic imaging can directly capture the internal magnetization of natural and synthetic materials at resolutions <10 nm. This capability opens new possibilities to determine the magnetic domain state of ferromagnetic minerals that are fundamental for recording and retaining paleomagnetic records.
Elias N. Mansbach, Richard J. Harrison, Tim A. Butcher, Simone Finizio, Sergio Valencia, Thomas Ginnis   +5 more
wiley   +1 more source

Detailed Calculations of the Efficiency of Planetesimal Accretion in the Core-accretion Model. III. The Contribution of Planetesimals beyond Saturn

The Astrophysical Journal
Continuing our initiative on advancing the calculations of planetesimal accretion in the core-accretion model, we present here the results of our recent study of the contributions of planetesimals around and beyond the orbit of Saturn.
Nader Haghighipour, Morris Podolak, Esther Podolak   +2 more
doaj   +1 more source

The Influence of Cold Jupiters in the Formation of Close-in Planets. I. Planetesimal Transport

The Astrophysical Journal, 2023
The formation of a cold Jupiter (CJ) is expected to quench the influx of pebbles and the migration of cores interior to its orbit, thus limiting the efficiency of rocky planet formation either by pebble accretion and/or orbital migration.
Marcy Best, Antranik A. Sefilian, Cristobal Petrovich   +2 more
doaj   +1 more source

CONGLOMERATION OF KILOMETER-SIZED PLANETESIMALS [PDF]

The Astrophysical Journal, 2015
We study the efficiency of forming large bodies, starting from a sea of equal-sized planetesimals. This is likely one of the earlier steps of planet formation and relevant for the formation of the asteroid belt, the Kuiper belt and extra-solar debris disks.
Andrew Shannon, Yanqin Wu, Yoram Lithwick   +2 more
openaire   +2 more sources