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- W4297889564 abstract "We present here, for the first time, a 2D study of the overshoot convective mechanism in nova outbursts for a wide range of possible compositions of the layer underlying the accreted envelope. Previous surveys studied this mechanism only for solar composition matter accreted on top of carbon oxygen (C-O) white dwarfs. Since, during the runaway, mixing with carbon enhances the hydrogen burning rates dramatically, one should question whether significant enrichment of the ejecta is possible also for other underlying compositions (He, O, Ne, Mg), predicted by stellar evolution models. We simulated several non-carbon cases and found significant amounts of those underlying materials in the ejected hydrogen layer. Despite large differences in rates, time scales and energetics between the cases, our results show that the convective dredge up mechanism predicts significant enrichment in all our non-carbon cases, including helium enrichment in recurrent novae. The results are consistent with observations." @default.
- W4297889564 created "2022-10-01" @default.
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- W4297889564 date "2011-11-29" @default.
- W4297889564 modified "2023-10-16" @default.
- W4297889564 title "Convective overshoot mixing in Nova outbursts - The dependence on the composition of the underlying white dwarf" @default.
- W4297889564 doi "https://doi.org/10.48550/arxiv.1111.6777" @default.
- W4297889564 hasPublicationYear "2011" @default.
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