Results 71 to 80 of about 10,677 (209)

Evidence for late impact‐induced metasomatism on the brachinite parent body recorded by a phosphate assemblage in NWA 7828

Meteoritics &Planetary Science, Volume 60, Issue 9, Page 2099-2113, September 2025.
Abstract Brachinites are a group of ultramafic achondritic meteorites thought to sample a planetesimal from the early inner solar system. They yield predominately ancient crystallization ages within 4 Ma of CAI formation, and while the formation mechanism for these samples is debated, they are widely thought to be partial melt residues from a ...
L. F. White, B. G. Rider‐Stokes, M. Anand, R. Tartèse, J. R. Darling, G. Degli Alessendrini, R. Greenwood, K. T. Tait   +7 more
wiley   +1 more source

Accretion Bursts in Young Intermediate-mass Stars Make Planet Formation Challenging

The Astrophysical Journal
We investigate the occurrence of accretion bursts, dust accumulation, and the prospects for planetesimal formation in a gravitationally unstable magnetized protoplanetary disk (PPD) with globally suppressed but episodically triggered magnetorotational ...
Indrani Das, Eduard Vorobyov, Shantanu Basu   +2 more
doaj   +1 more source

Origin of the CC-NC isotopic dichotomy in early planetesimals (iron meteorite parent bodies) [PDF]

, 2022
Alessandro Morbidelli, Kévin Baillié, Konstantin Batygin, S. Charnoz, T. Guillot, D. C. Rubie, T. Kleine   +6 more
openalex   +1 more source

Olivine fabric and microstructure in Northwest Africa (NWA) 7059 and Nova 018: Insights into ureilite deformation

Meteoritics &Planetary Science, Volume 60, Issue 9, Page 2166-2183, September 2025.
Abstract Olivine is a major constituent in ureilites and commonly defines macroscopic fabric via shape‐preferred orientation of elongate grains. In this study, we examined olivine fabric (crystallographic preferred orientation, or CPO) and microstructures in the unbrecciated olivine‐pigeonite ureilites Northwest Africa (NWA) 7059 and Nova 018 using ...
A. I. Sheen, C. K. F. Tirona, K. T. Tait, L. F. White, B. C. Hyde, S. Korchinos   +5 more
wiley   +1 more source

Composition of giant planets: the roles of pebbles and planetesimals [PDF]

, 2023
Claudia Danti, Bertram Bitsch, Jingyi Mah   +2 more
openalex   +1 more source

Constraints on the Feasibility of Ferrovolcanism on Asteroid 16 Psyche

Journal of Geophysical Research: Planets, Volume 130, Issue 8, August 2025.
Abstract Asteroid 16 Psyche's surface appears to be highly metallic, but its bulk density suggests a silicate‐rich interior. Ferrovolcanism has been suggested to explain how a silicate‐rich body could develop a metallic surface. This requires trapping of light elements bearing iron‐rich metallic melt in a core solidifying from the outside inwards.
J. J. Jorritsma, W. van Westrenen
wiley   +1 more source

Extensive Pollution of Uranus and Neptune’s Atmospheres by Upsweep of Icy Material during the Nice Model Migration

The Astronomical Journal
In the Nice model of Solar System formation, Uranus and Neptune undergo an orbital upheaval, sweeping through a planetesimal disk. The region of the disk from which material is accreted by the ice giants during this phase of their evolution has not ...
Eva Zlimen, Elizabeth Bailey, Ruth Murray-Clay   +2 more
doaj   +1 more source

Did a Complex Carbon Cycle Operate in the Inner Solar System?

Life, 2020
Solids in the interstellar medium consist of an intimate mixture of silicate and carbonaceous grains. Because 99% of silicates in meteorites were reprocessed at high temperatures in the inner regions of the Solar Nebula, we propose that similar levels of
Joseph A. Nuth, Frank T. Ferguson, Hugh G. M. Hill, Natasha M. Johnson   +3 more
doaj   +1 more source

Circumbinary Planet Formation in the Kepler-16 system. I. N-body Simulations

, 2012
The recently discovered circumbinary planets (Kepler-16 b, Kepler-34 b, Kepler-35 b) represent the first direct evidence of the viability of planet formation in circumbinary orbits.
Holman, Ida, Marzari, Marzari, Meschiari, Moriwaki, Slawson, Stefano Meschiari, Stewart, Weidenschilling, Winn, Xie, Xie   +12 more
core   +1 more source

The Characterization of the Dust Content in the Ring Around Sz 91: Indications of Planetesimal Formation? [PDF]

, 2021
Karina Maucó, Carlos Carrasco‐González, M. R. Schreiber, Anibal Sierra, J. Olofsson, A. Bayo, C. Cáceres, H. Cánovas, Aina Palau   +8 more
openalex   +1 more source