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Deviations from a uniform period spacing of gravity modes in a massive star

Author

Listed:
  • Pieter Degroote

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Conny Aerts

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
    IMAPP, Radboud University Nijmegen, PO Box 9010, 6500 GL Nijmegen, The Netherlands)

  • Annie Baglin

    (LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France)

  • Andrea Miglio

    (Institut d'Astrophysique et de Géophysique de l'Université de Liege, Allée du 6 Aout 17, 4000 Liege, Belgium)

  • Maryline Briquet

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Arlette Noels

    (Institut d'Astrophysique et de Géophysique de l'Université de Liege, Allée du 6 Aout 17, 4000 Liege, Belgium)

  • Ewa Niemczura

    (Astronomical Institute, Wroclaw University, Kopernika 11, 51-622 Wroclaw, Poland)

  • Josefina Montalban

    (Institut d'Astrophysique et de Géophysique de l'Université de Liege, Allée du 6 Aout 17, 4000 Liege, Belgium)

  • Steven Bloemen

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Raquel Oreiro

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Maja Vučković

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Kristof Smolders

    (Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium)

  • Michel Auvergne

    (LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France)

  • Frederic Baudin

    (Institut d'Astrophysique Spatiale (IAS), Batiment 121, F-91405, Orsay Cedex, France)

  • Claude Catala

    (LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France)

  • Eric Michel

    (LESIA, UMR8109, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195 Meudon, France)

Abstract

A stellar interior probed The predictive power of current stellar evolution models is limited by the fact that little is known about the mixing process occurring at the stellar core. In theory, massive stars such as HD 50230 — seven times the mass of the Sun — should be ideal models for seismic probing of the stellar core via the distinct signature they leave in the gravity mode spectrum as it propagates from the core to the stellar surface. These gravity modes have now been detected observationally, in a continuous photometric light curve for HD 50230 collected with the CoRoT satellite. The data make it possible to estimate the extent of the convective core and constrain the location of the chemical transition zone at about 10% of the stellar radius.

Suggested Citation

  • Pieter Degroote & Conny Aerts & Annie Baglin & Andrea Miglio & Maryline Briquet & Arlette Noels & Ewa Niemczura & Josefina Montalban & Steven Bloemen & Raquel Oreiro & Maja Vučković & Kristof Smolders, 2010. "Deviations from a uniform period spacing of gravity modes in a massive star," Nature, Nature, vol. 464(7286), pages 259-261, March.
    • Handle: RePEc:nat:nature:v:464:y:2010:i:7286:d:10.1038_nature08864
    DOI: 10.1038/nature08864
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