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- W3201747455 abstract "Calcium-aluminum–rich inclusions (CAIs) in meteorites carry crucial information about the environmental conditions of the nascent Solar System prior to planet formation. Based on models of 50V–10Be co-production by in-situ irradiation, CAIs are considered to have formed within ~0.1 AU from the proto-Sun. Here, we present vanadium (V) and strontium (Sr) isotopic co-variations in fine- and coarse-grained CAIs and demonstrate that kinetic isotope effects during partial condensation and evaporation best explain V isotope anomalies previously attributed to solar particle irradiation. We also report initial excesses of 10Be and argue that CV CAIs possess essentially a homogeneous level of 10Be, inherited during their formation. Based on numerical modeling of 50V–10Be co-production by irradiation, we show that CAI formation during protoplanetary disk build-up likely occurred at greater heliocentric distances than previously considered, up to planet-forming regions (~1AU), where solar particle fluxes were sufficiently low to avoid substantial in-situ irradiation of CAIs." @default.
- W3201747455 created "2021-10-11" @default.
- W3201747455 creator A5001134852 @default.
- W3201747455 creator A5001754345 @default.
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- W3201747455 creator A5063361556 @default.
- W3201747455 creator A5082059951 @default.
- W3201747455 creator A5091182206 @default.
- W3201747455 date "2021-10-01" @default.
- W3201747455 modified "2023-10-12" @default.
- W3201747455 title "Fossil records of early solar irradiation and cosmolocation of the CAI factory: A reappraisal" @default.
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