Hostname: page-component-76fb5796d-dfsvx Total loading time: 0 Render date: 2024-04-25T17:19:44.795Z Has data issue: false hasContentIssue false
  • English
  • Français

Solar-like oscillation amplitudes and line-widths as a probe for turbulent convection in stars

Published online by Cambridge University Press:  01 August 2006

R. Samadi ,
K. Belkacem ,
M.-J. Goupil ,
F. Kupka  and
M.-A. Dupret
R. Samadi
Affiliation:
Observatoire de Paris, LESIA, Meudon, France; email: reza.samadi@obspm.fr
K. Belkacem
Affiliation:
Observatoire de Paris, LESIA, Meudon, France; email: reza.samadi@obspm.fr
M.-J. Goupil
Affiliation:
Observatoire de Paris, LESIA, Meudon, France; email: reza.samadi@obspm.fr
F. Kupka
Affiliation:
Max-Planck-Institute for Astrophysics, Garching, Germany.
M.-A. Dupret
Affiliation:
Observatoire de Paris, LESIA, Meudon, France; email: reza.samadi@obspm.fr
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Excitation of solar-like oscillations is attributed to turbulent convection and takes place at the upper-most part of the outer convective zones. Amplitudes of these oscillations depend on the efficiency of the excitation processes as well as on the properties of turbulent convection. We present past and recent improvements on the modeling of those processes. We show how the mode amplitudes and mode line-widths can bring information about the turbulence in the specific cases of the Sun and α Cen A.

Keywords

TurbulenceconvectionSun: oscillationsstars: oscillations (including pulsations)stars: Alpha Cen A
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S239: Convection in Astrophysics , August 2006 , pp. 349 - 357
Copyright
Copyright © International Astronomical Union 2007

References

Abdella, K. & McFarlane, . 1997, J. Atmos. Sci. 54, 18502.0.CO;2>CrossRefGoogle Scholar
Balmforth, N J. 1992, MNRAS 255, 639CrossRefGoogle Scholar
Baudin, F., Samadi, R., Goupil, M.-J. et al. , 2005, A&A 433, 349Google Scholar
Bedding, T. R. & Kjeldsen, H. 2006, Memorie della Societa Astronomica Italiana 77, 384Google Scholar
Bedding, T. R., Kjeldsen, H., Butler, R. P., et al. 2004, apj 614, 380CrossRefGoogle Scholar
Belkacem, K., Samadi, R., Goupil, M. & Kupka, F. 2006a, A&A 460, 173Google Scholar
Belkacem, K., Samadi, R., Goupil, M. & Kupka, F. 2006, A&A 460, 183Google Scholar
Belkacem, K., Samadi, R., Goupil, M., Kupka, F. & Baudin, F. 2006, in SF2A-2006: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 26-30, 2006, Eds.: Barret, D., Casoli, F., Contini, T., Lagache, G., Lecavelier, A., and Pagani, L., Vol. in pressGoogle Scholar
Chaplin, W. J., Elsworth, Y., Isaak, G. R., et al. 1998, MNRAS 298, L7CrossRefGoogle Scholar
Chaplin, W. J., Houdek, G., Elsworth, Y. et al. , 2005, MNRAS 360, 859CrossRefGoogle Scholar
Fletcher, S. T., Chaplin, W. J., Elsworth, Y., Schou, J. & Buzasi, D. 2006, MNRAS 371, 935CrossRefGoogle Scholar
Goldreich, P. & Keeley, D. A. 1977, ApJ 212, 243CrossRefGoogle Scholar
Gough, D. O. 1977, ApJ 214, 196CrossRefGoogle Scholar
Gryanik, V. & Hartmann, J. 2002, J. Atmos. Sci. 59, 27292.0.CO;2>CrossRefGoogle Scholar
Kjeldsen, H., Bedding, T. R., Butler, R. P., et al. 2005, ApJ 635, 1281CrossRefGoogle Scholar
Kupka, F. & Robinson, F. 2007, MNRAS 374, 305CrossRefGoogle Scholar
Lesieur, M. 1997, Turbulence in fluids (Kluwer Academic Publishers)CrossRefGoogle Scholar
Michel, E., Samadi, R., Baudin, F., Auvergne, M. & the Corot Team. 2006, Memorie della Societa Astronomica Italiana 77, 539Google Scholar
Miglio, A. & Montalbán, J. 2005, A&A 441, 615Google Scholar
Rieutord, M. & Zahn, J.-P. 1995, A&A 296, 127Google Scholar
Samadi, R. & Goupil, M.. 2001, A&A 370, 136Google Scholar
Samadi, R., Goupil, M.-J., Alecian, E. et al. , 2005, JapA 26, 171Google Scholar
Samadi, R., Goupil, M. J., Baudin, F. et al. , 2004, in Proceedings of the SOHO 14/GONG 2004 Workshop (ESA SP-559). “Helio- and Asteroseismology: Towards a Golden Future”. Editor: Danesy, D.., 615 (astro–ph/0409325)Google Scholar
Samadi, R., Nordlund, Å., Stein, R. F., Goupil, M. J. & Roxburgh, I. 2003, A&A 404, 1129Google Scholar
Samadi, R., Nordlund, Å., Stein, R. F., Goupil, M. J. & Roxburgh, I. 2003, A&A 403, 303Google Scholar
Schou, J. & Buzasi, D. L. 2001, in ESA SP-464: SOHO 10/GONG 2000 Workshop: Helio- and Asteroseismology at the Dawn of the Millennium, ed. Wilson, A. & Pallé, P. L., 391–394Google Scholar
Stein, R. F. & Nordlund, Å. 1998, ApJ 499, 914CrossRefGoogle Scholar