Mathematics – Logic
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..414..157b&link_type=abstract
Cosmic Dust - Near and Far ASP Conference Series, Vol. 414, proceedings of a conference held 8-12 September 2008 in Heidelberg,
Mathematics
Logic
Scientific paper
The comet samples returned by the NASA Stardust mission contain abundant crystalline silicates that are very similar to inner solar materials found in primitive asteroidal meteorites. Isotopic compositions indicate that the bulk of the silicates from comet Wild 2 formed in the solar nebula and that the pre-solar content is less than in primitive meteorites. It appears that the bulk of the coarse-grained components of this Jupiter Family Comet formed in the inner regions of the solar nebula and were transported to the edge of the solar system where Kuiper Belt comets accreted. The data is consistent with substantial large-scale radial transport of micron to millimeter grains in the solar nebula. The isotopic, elemental and mineralogical compositions of the majority of Wild 2 silicates as well as the textural relationship between phases do not appear to be compatible with origin by 1000 K annealing of pre-solar grains.
Brownlee Don E.
Joswiak Dave
Matrajt Graciela
Tsou Peter
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