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15 February 2025
 
  » arxiv » astro-ph/0107099

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P-mode observations on Alpha Cen A
Francois Bouchy ; Fabien Carrier ;
Date 5 Jul 2001
Subject astro-ph
AbstractWe have made a clear detection of p-mode oscillations in the nearest solar-like G2V star $alpha$ 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 $mu$Hz and the amplitude of about 35 cm s$^{-1}$ of these modes are in agreement with theoretical expectations.
Source arXiv, astro-ph/0107099
Other source [GID 265736] astro-ph/0107099
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