Browsing Physics and Astronomy publications (MU) by Title "The Origin of Presolar Silica Grains in AGB Stars"
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The Origin of Presolar Silica Grains in AGB Stars
(Lunar and Planetary Institute, 2010)We have found two presolar silica grains in ALH A77307, which exhibit excesses in 17O but are normal in 18O. Silicon-oxide grains probably form during rapid cooling under non-equilibrium conditions in O-rich AGB stars with ...