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arXiv · astro-ph/0107099

P-mode observations on Alpha Cen A

Francois Bouchy·Fabien Carrier
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Abstract

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 $μ$Hz and the amplitude of about 35 cm s$^{-1}$ of these modes are in agreement with theoretical expectations.

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Francois Bouchy, Fabien Carrier. 2001-07-05. P-mode observations on Alpha Cen A. https://doi.org/10.1051/0004-6361%3A20010792

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