A&A 374, L5-L8 (2001)
P-mode observations on Cen AF. Bouchy and F. Carrier
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland
(Received 9 May 2001 / Accepted 5 June 2001)
We have made a clear detection of p-mode oscillations in the nearest solar-like G2V star Cen A with the CORALIE spectrograph on the 1.2-m Swiss telescope at the ESO La Silla Observatory. We report the 5 nights of observation on this star in May 2001 during which 1260 high precision radial velocity measurements were obtained. The power spectrum clearly shows several identifiable peaks between 1.7 and 3 mHz. The average large splitting of 105.7 Hz and the amplitude of about 35 cm s-1 of these modes are in agreement with theoretical expectations.
Key words: stars: individual: Cen A -- stars: oscillations -- techniques: radial velocities
Offprint request: F. Bouchy, Francois.Bouchy@obs.unige.ch
© ESO 2001