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The stellar origins of presolar silicates
discovered in Antarctic micrometeorites
Yada T., Stadermann F.J., Floss C., Zinner E.,
Olinger C.T., Graham G.A., Bradley J.P., Dai Z.R., Nakamura
T. and Noguchi T. (2005) 29th Symposium on Antarctic
Meteorites, NIPR.
ABSTRACT
Presolar grains, which formed in the stars existed before
the solar system, have given us valuable information about
stellar nucleosynthesis and the origin of the solar system.
In these years, presolar silicates have been discovered in
interplanetary dust particles (IDPs) and chondrites, which
indicates that presolar grains existed more ubiquitously in
the early solar nebula than previously considered. As
reported before, presolar silicates were discovered also in
Antarctic micrometeorites (AMMs), using NanoSIMS. This
discovery tells us that parent bodies of the AMMs preserve a
primary feature since their accretions in the early solar
nebula. Here we review the discovered presolar silicates and
discuss about their stellar origins.
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