Asteroseismology of the planet-hosting star μ Arae I. The acoustic spectrum

F. Bouchy, M. Bazot, N. C. Santos, S. Vauclair, D. Sosnowska

Research output: Contribution to journalArticle

Abstract

We present HARPS spectroscopy of μ Arae (HD 160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously reported discovery of a 14 earth mass planetary companion (Santos et al. 2004b, A&A, 426, L19). The present analysis reinforces this interpretation by excluding other possible processes for explaining the observed Doppler variation and leads to the identification of up to 43 p-mode oscillations with l = 0-3, frequencies in the range 1.3-2.5 mHz and amplitudes in the range 10-40 cm s-1.

Original languageEnglish (US)
Pages (from-to)609-614
Number of pages6
JournalAstronomy and Astrophysics
Volume440
Issue number2
DOIs
StatePublished - Sep 1 2005

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Keywords

  • Stars: individual: μ Arae
  • Stars: oscillations
  • Stars: planetary systems
  • Techniques: radial velocities

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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