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Desch","submitted_at":"2010-10-22T22:59:35Z","abstract_excerpt":"Injection of material from a core-collapse supernova into the solar system's already-formed disk is one proposed mechanism for producing the short-lived radionuclides, such as 26Al and 41Ca, inferred from isotopic studies of meteorites to have existed in the solar nebula. This hypothesis has recently been challenged on the basis that the injection of enough supernova material to match the meteoritic abundances of 26Al and 41Ca would produce large, measureable, and unobserved collateral effects on oxygen isotopes. 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