EDP Sciences
Free access
Volume 402, Number 1, April IV 2003
Page(s) 293 - 297
Section Stellar atmospheres
DOI http://dx.doi.org/10.1051/0004-6361:20030244

A&A 402, 293-297 (2003)
DOI: 10.1051/0004-6361:20030244

A new seismic analysis of Alpha Centauri

A. Thoul, R. Scuflaire, A. Noels, B. Vatovez, M. Briquet, M.-A. Dupret and J. Montalban

Institute of Astrophysics and Geophysics, University of Liège, 17 allée du 6-Août, Sart Tilman (Bât B5c), 4000 Liège 1, Belgium
(Received 1 July 2002 / Accepted 10 February 2003)

Models of $\alpha$ Cen A & B have been computed using the masses determined by Pourbaix et al. (2002) and the data derived from the spectroscopic analysis of Neuforge & Magain (1997). The seismological data obtained by Bouchy & Carrier (2001, 2002) do help improve our knowledge of the evolutionary status of the system. All the constraints are satisfied with a model which gives an age of about 6 Gyr for the binary.

Key words: stars: binaries: visual -- stars: individual: $\alpha$ Cen -- stars: oscillations -- stars: evolution

Offprint request: A. Thoul, thoul@astro.ulg.ac.be

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