How to form planetesimals from mm-sized chondrules and chondrule aggregates [PDF]
, 2015 The size distribution of asteroids and Kuiper belt objects in the solar system is difficult to reconcile with a bottom-up formation scenario due to the observed scarcity of objects smaller than $\sim$100 km in size.
Carrera, Daniel +2 more
core +2 more sources
Abundant microchondrules in 162173 Ryugu suggest a turbulent origin for primitive asteroids [PDF]
Nature CommunicationsChondrules are a characteristic feature of primitive Solar System materials and are common in all primitive meteorites except the CI-chondrites. They are thought to form owing to melting of solid dust aggregates by energetic processing within the solar ...
Matthew J. Genge +7 more
doaj +2 more sources
Cooling of Dense Gas by H2O Line Emission and an Assessment of its Effects in Chondrule-Forming Shocks [PDF]
, 2008 We consider gas at densities appropriate to protoplanetary disks and calculate its ability to cool due to line radiation emitted by H2O molecules within the gas. Our work follows that of Neufeld & Kaufman (1993; ApJ, 418, 263), expanding on their work in
Avrett +32 more
core +2 more sources
Chondrule Survivability in the Solar Nebula [PDF]
The Astrophysical JournalThe lifetime of millimeter-sized dust grains, such as chondrules, in the nominal solar nebula model is limited to ∼10 ^5 yr, due to an inward drift driven by gas drag.
Tetsuo Taki, Shigeru Wakita
doaj +2 more sources
Classification of stony meteorites and chondrules – the case of meteorite Jesenice
Geologija, 2012 In the first part of the paper there is a description about genesis of meteorites, in particularly about stony meteorites– chondrites, since meteorite Jesenice is an ordinary L chondrite. Chondrules represent main part of the mass ofchondritic meteorites.
Bojan Ambrožič +3 more
doaj +3 more sources
PLANETARY EMBRYO BOW SHOCKS AS A MECHANISM FOR CHONDRULE FORMATION [PDF]
, 2016 We use radiation hydrodynamics with direct particle integration to explore the feasibility of chondrule formation in planetary embryo bow shocks. The calculations presented here are used to explore the consequences of a Mars-size planetary embryo ...
C. Mann, A. Boley, M. Morris
semanticscholar +2 more sources
Compound Chondrule Formation in Optically Thin Shock Waves [PDF]
Astrophysical Journal, 2019 Shock-wave heating within the solar nebula is one of the leading candidates for the source of chondrule-forming events. Here we examine the possibility of compound chondrule formation via optically thin shock waves.
S. Arakawa, T. Nakamoto
semanticscholar +3 more sources
PARTITIONING TUNGSTEN BETWEEN MATRIX PRECURSORS AND CHONDRULE PRECURSORS THROUGH RELATIVE SETTLING [PDF]
, 2016 Recent studies of chondrites have found a tungsten isotopic anomaly between chondrules and matrix. Given the refractory nature of tungsten, this implies that W was carried into the solar nebula by at least two distinct families of pre-solar grains.
A. Hubbard
semanticscholar +3 more sources
The Astrophysical JournalComet 81P/Wild 2 is a ∼4.5 km-sized primordial object that almost has not been modified by internal heating by ^26 Al decay. Its nucleus could have been formed by hierarchical agglomeration or gravitational collapse of pebble swarms concentrated by ...
Mingming Zhang +5 more
doaj +2 more sources
Shock-Wave Heating Model for Chondrule Formation: Prevention of Isotopic Fractionation [PDF]
, 2006 Chondrules are considered to have much information on dust particles and processes in the solar nebula. It is naturally expected that protoplanetary disks observed in present star forming regions have similar dust particles and processes, so study of ...
Blandford R. D. +9 more
core +5 more sources