Results 51 to 60 of about 4,544 (213)

Planetesimal/Debris Disks

open access: yes, 2023
Review chapter of the book "Planetary Systems Now", to be published by World ...
openaire   +2 more sources

APPLICATION OF GAS DYNAMICAL FRICTION FOR PLANETESIMALS. I. EVOLUTION OF SINGLE PLANETESIMALS [PDF]

open access: yesThe Astrophysical Journal, 2015
Accepted to ...
Evgeni Grishin, Hagai B. Perets
openaire   +2 more sources

Crystallization of dmisteinbergite (hexagonal CaAl2Si2O8) from type B CAI analog melt

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 9, Page 2258-2268, September 2026.
Abstract Dmisteinbergite is a metastable polymorph of CaAl2Si2O8, which has been found in calcium−aluminum‐rich inclusions (CAIs) in chondrites, although anorthite is the predominant CaAl2Si2O8 phase in natural type B CAIs. The occurrence/absence of igneous dmisteinbergite would put tighter constraints on the thermal history of CAIs.
Yasuaki Tsuruoka   +6 more
wiley   +1 more source

A Long‐Lived Planetesimal Dynamo Powered by Core Crystallization

open access: yesGeophysical 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
doaj   +1 more source

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

open access: yesThe 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

The first discovery of a shocked, metasomatised CV3 chondrule‐fragment in a (Al,Cu)‐bearing micrometeorite

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 9, Page 2269-2283, September 2026.
Abstract We report the discovery of the second (Al,Cu)‐alloy–bearing micrometeorite, FB‐A2, recovered from Mount Gariglione (southern Italy), representing the sixth such occurrence worldwide. Although chondritic in nature, FB‐A2 differs markedly from previously described microspherules.
Giovanna Agrosì   +6 more
wiley   +1 more source

Interstellar planetesimals

open access: yes, 2022
During the formation of our solar system, a large number of planetesimals were ejected into interstellar space by gravitational encounters with the planets.
Moro-Martín, Amaya
core  

Planetesimals Around White Dwarfs [PDF]

open access: yes, 2014
Evidence is convincing that a big fraction of extrasolar planetesimals can survive the red giant stage of a star and persist into the white dwarf phase. We argue that eventually, some of them do get perturbed into the tidal radius of the white dwarf and ...
Xu, Siyi
core   +1 more source

Modeling Carbon Outgassing from Chondritic Planetesimals

open access: yesThe 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

Rapid Dust Growth during Hydrodynamic Clumping due to Streaming Instability

open access: yesThe Astrophysical Journal, 2023
Streaming instability is considered to be one of the dominant processes in promoting planetesimal formation by the gravitational collapse of dust clumps.
Ryosuke T. Tominaga, Hidekazu Tanaka
doaj   +1 more source

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