# A new seismic analysis of Alpha Centauri

@article{Thoul2003ANS,
title={A new seismic analysis of Alpha Centauri},
author={Anne Thoul and Richard Scuflaire and Arlette Noels and Benjamin Vatovez and Maryline Briquet and M-A. Dupret and Josefina Montalb{\'a}n},
journal={Astronomy and Astrophysics},
year={2003},
volume={402},
pages={293-297}
}
• Published 20 March 2003
• Geology
• Astronomy and Astrophysics
Models of α Cen A &Bh avebeen 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.
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## References

SHOWING 1-10 OF 23 REFERENCES

• Physics
• 2002
Using the oscillation frequencies of Cen A recently discovered by Bouchy & Carrier (2001, 2002), the available astrometric, photometric and spectroscopic data, we tried to improve the calibration of
• Physics
• 1992
Spectroscopically observed abundances of Furenlid and Meylan (1990) and Los Alamos Opacity Library opacities specifically constructed for this mixture are used to construct the most detailed models
• Physics
• 2002
New radial velocities of Cen A & B obtained in the framework the Anglo-Australian Planet Search programme as well as in the CORALIE programme are added to those by Endl et al. (2001) to improve the
• Physics
• 1997
The structure of the deep interior of a variety of standard and nonstandard solar models constrained by the low-l p-mode oscillation data from GONG are presented. For standard models, we show that
• Physics
• 2000
Detailed models of α Centauri A and B based on the Hipparcos, Yale, and Söderhjelm parallaxes are compared. The consequences of the uncertainty in mass, luminosity, surface temperature, and
• Physics
• 2001
We 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
• Physics
• 2002
This paper presents the analysis of Doppler p-mode observations of the G2V star a Cen A obtained with the spectrograph CORALIE in May 2001. Thirteen nights of observations have made it possible to
• Geology
• 1975
A new, comprehensive set of low-temperature opacity data has been assembled. From this basic data set, Rosseland and Planck mean opacities have been computed for temperatures between 12,500 and 700
• Physics, Geology
• 1998
Consistent stellar evolution models of F stars (1.1-1.5 M☉) are calculated with radiative forces, opacities, and diffusion for all elements included in OPAL's opacity tables. The opacities and
• Physics
• 1996
The reexamination of astrophysical opacities has eliminated gross discrepancies between a variety of observations and theoretical calculations; thus allowing for more detailed tests of stellar