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Kelvin–Helmholtz instabilities as the source of inhomogeneous mixing in nova explosions

Author

Listed:
  • Jordi Casanova

    (Departament de Física i Enginyeria Nuclear, EUETIB, Universitat Politècnica de Catalunya, C./ Comte d’Urgell 187
    Institut d’Estudis Espacials de Catalunya, Ed. Nexus-201, C./ Gran Capità 2-4)

  • Jordi José

    (Departament de Física i Enginyeria Nuclear, EUETIB, Universitat Politècnica de Catalunya, C./ Comte d’Urgell 187
    Institut d’Estudis Espacials de Catalunya, Ed. Nexus-201, C./ Gran Capità 2-4)

  • Enrique García-Berro

    (Institut d’Estudis Espacials de Catalunya, Ed. Nexus-201, C./ Gran Capità 2-4
    Departament de Física Aplicada, Universitat Politècnica de Catalunya, C./ Esteve Terrades 5)

  • Steven N. Shore

    (Università di Pisa and Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Largo B. Pontecorvo 3)

  • Alan C. Calder

    (Stony Brook University)

Abstract

The isotope mix from classic supernovae The chemical abundance pattern of the Universe is largely dependent on the products of the nucleosynthesis that occurs during stellar explosions. Classical novae are thought to be the main sources of 15N, 17O and 13C isotopes in our Galaxy, but the origin of the inhomogeneous distribution of these species, as observed in their ejecta, has puzzled theoreticians for more than 40 years. Now, a three-dimensional simulation of mixing at the core–envelope interface during nova outbursts confirms that hydrodynamic instabilities are the main mechanism for self-enrichment of the envelope with core material. The simulations naturally produce chemical inhomogeneities that are consistent with observations.

Suggested Citation

  • Jordi Casanova & Jordi José & Enrique García-Berro & Steven N. Shore & Alan C. Calder, 2011. "Kelvin–Helmholtz instabilities as the source of inhomogeneous mixing in nova explosions," Nature, Nature, vol. 478(7370), pages 490-492, October.
    • Handle: RePEc:nat:nature:v:478:y:2011:i:7370:d:10.1038_nature10520
    DOI: 10.1038/nature10520
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