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Doppler ground-based asteroseismology of the exoplanets host star μ Arae

Published online by Cambridge University Press:  05 January 2006

M. Giard ,
F. Casoli ,
F. Paletou ,
M. Bazot ,
F. Bouchy ,
S. Vauclair  and
N. C. Santos
M. Bazot
Affiliation:
Observatoire Midi-Pyrénées, 14 Av. E. Belin, 31400 Toulouse, France
F. Bouchy
Affiliation:
Laboratoire d'Astrophysique de Marseille, Traverse du Siphon, 13013 Marseille, France
S. Vauclair
Affiliation:
Observatoire Midi-Pyrénées, 14 Av. E. Belin, 31400 Toulouse, France
N. C. Santos
Affiliation:
Centro de Astrofisica da Universidade de Lisbo, Tapada da Ajuda, 1349-018 Lisboa, Portugal
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Abstract

We present here a new result of ground-based asteroseismology obtained with the spectrograph HARPS. The exoplanets host star μ Arae was observed during an 8 nights campaign in order to understand the origin of the overmetallicity of planet-hosting stars. Thanks to very high precision Doppler measurements, we identified more than 20 p-modes in this star and compared it with different models. These results demonstrate the potential of ground-based Doppler asteroseismology and should be considered to be implemented in Dome C in the future in order to benefit of long and uninterrupted observations.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 14: Dome C Astronomy and Astrophysics Meeting , 2005 , pp. 349 - 354
Copyright
© EAS, EDP Sciences, 2005

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