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A large oxygen-dominated core from the seismic cartography of a pulsating white dwarf

Author

Listed:
  • N. Giammichele

    (Institut de Recherche en Astrophysique et Planétologie (IRAP), Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UPS, Centre National d’Études Spatiales (CNES)
    Université de Montréal)

  • S. Charpinet

    (Institut de Recherche en Astrophysique et Planétologie (IRAP), Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UPS, Centre National d’Études Spatiales (CNES))

  • G. Fontaine

    (Université de Montréal)

  • P. Brassard

    (Université de Montréal)

  • E. M. Green

    (Steward Observatory, University of Arizona)

  • V. Van Grootel

    (Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège)

  • P. Bergeron

    (Université de Montréal)

  • W. Zong

    (Institut de Recherche en Astrophysique et Planétologie (IRAP), Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), UPS, Centre National d’Études Spatiales (CNES)
    Beijing Normal University)

  • M.-A. Dupret

    (Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège)

Abstract

Asteroseismic ‘sounding’ reveals the internal chemical stratification of the white dwarf KIC08626021, which has a central homogeneous core—composed of 86 per cent oxygen—that has a mass of 0.45 solar masses.

Suggested Citation

  • N. Giammichele & S. Charpinet & G. Fontaine & P. Brassard & E. M. Green & V. Van Grootel & P. Bergeron & W. Zong & M.-A. Dupret, 2018. "A large oxygen-dominated core from the seismic cartography of a pulsating white dwarf," Nature, Nature, vol. 554(7690), pages 73-76, February.
    • Handle: RePEc:nat:nature:v:554:y:2018:i:7690:d:10.1038_nature25136
    DOI: 10.1038/nature25136
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