Hostname: page-component-848d4c4894-2xdlg Total loading time: 0 Render date: 2024-06-27T07:52:04.216Z Has data issue: false hasContentIssue false
  • English
  • Français

Stochastic excitation of gravity waves in rapidly rotating massive stars

Published online by Cambridge University Press:  23 January 2015

S. Mathis  and
C. Neiner
S. Mathis
Affiliation:
Laboratoire AIM Paris-Saclay, CEA/DSM - CNRS - Université Paris Diderot, IRFU/SAp Centre de Saclay, F-91191 Gif-sur-Yvette Cedex, France email: stephane.mathis@cea.fr LESIA, Observatoire de Paris, CNRS UMR 8109, UPMC, Univ. Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France
C. Neiner
Affiliation:
LESIA, Observatoire de Paris, CNRS UMR 8109, UPMC, Univ. Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France
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.

Stochastic gravity waves have been recently detected and characterised in stars thanks to space asteroseismology and they may play an important role in the evolution of stellar angular momentum. In this context, the observational study of the CoRoT hot Be star HD 51452 suggests a potentially strong impact of rotation on stochastic excitation of gravito-inertial waves in rapidly rotating stars. In this work, we present our results on the action of the Coriolis acceleration on stochastic wave excitation by turbulent convection. We study the change of efficiency of this mechanism as a function of the waves' Rossby number and we demonstrate that the excitation presents two different regimes for super-inertial and sub-inertial frequencies. Consequences for rapidly rotating early-type stars and the transport of angular momentum in their interiors are discussed.

Keywords

hydrodynamicsturbulencewavesstars: oscillationsstars: rotationstars: interiors
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 220 - 221
Copyright
Copyright © International Astronomical Union 2015 

References

Aerts, C., Christensen-Dalsgaard, J., & Kurtz, D. W. 2010, Asteroseismology, SpringerGoogle Scholar
Browning, M. K., Brun, A. S., & Toomre, J. 2004, ApJ 601, 512Google Scholar
Cantiello, M., Langer, N., Brott, I., et al. 2009, A&A 499, 279Google Scholar
Lee, U., Neiner, C., & Mathis, S. 2014, ArXiv e-printsGoogle Scholar
Mathis, S., Neiner, C. & Tran Minh, N. 2014, A&A 565, A47Google Scholar
Neiner, C., Floquet, M., Samadi, R., et al. 2012, A&A 546, A47Google Scholar
Rogers, T. M., Lin, D. N. C., McElwaine, J. N., & Lau, H. H. B. 2013, ApJ 772, 21CrossRefGoogle Scholar
Samadi, R., Belkacem, K., Goupil, M. J., et al. 2010, Ap&SS 328, 253Google Scholar
Shiode, J. H., Quataert, E., Cantiello, M., & Bildsten, L. 2013, MNRAS 430, 1736Google Scholar