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Oscillations on the star Procyon

Author

Listed:
  • François Bouchy

    (Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, BP8)

  • André Maeder

    (Observatoire de Genève)

  • Michel Mayor

    (Observatoire de Genève)

  • Denis Mégevand

    (Observatoire de Genève)

  • Francesco Pepe

    (Observatoire de Genève)

  • Danuta Sosnowska

    (Observatoire de Genève)

Abstract

Arising from: J. M. Matthews et al. Nature 430, 51–53 (2004) Stars are spheres of hot gas whose interiors transmit acoustic waves very efficiently. Geologists learn about the interior structure of Earth by monitoring how seismic waves propagate through it and, in a similar way, the interior of a star can be probed using the periodic motions on the surface that arise from such waves. Matthews et al. claim that the star Procyon does not have acoustic surface oscillations of the strength predicted1. However, we show here, using ground-based spectroscopy, that Procyon is oscillating, albeit with an amplitude that is only slightly greater than the noise level observed by Matthews et al. using spaced-based photometry.

Suggested Citation

  • François Bouchy & André Maeder & Michel Mayor & Denis Mégevand & Francesco Pepe & Danuta Sosnowska, 2004. "Oscillations on the star Procyon," Nature, Nature, vol. 432(7015), pages 2-2, November.
    • Handle: RePEc:nat:nature:v:432:y:2004:i:7015:d:10.1038_nature03165
    DOI: 10.1038/nature03165
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