Volume 374, Number 1, July IV 2001
|Page(s)||L5 - L8|
|Published online||15 July 2001|
P-mode observations on Cen A*
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland
Corresponding author: F. Bouchy, Francois.Bouchy@obs.unige.ch
Accepted: 5 June 2001
We have made a clear detection of p-mode oscillations in the nearest solar-like G2V star α 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 μHz and the amplitude of about 35 cm s-1 of these modes are in agreement with theoretical expectations.
Key words: stars: individual: α Cen A / stars: oscillations / techniques: radial velocities
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.