Generation of oscillatory motions in the stellar atmosphere

  • Yoji Osaki
1. The Physical Origin of Turbulence
Part of the Lecture Notes in Physics book series (LNP, volume 114)


Thermal overstability of non-radial eigenmodes of stars is discussed as one of possible causes for generating non-thermal motions in the stellar atmosphere. The nature of oscillatory motions in stars is first considered both in the local and the global stand points. Then, the excitation of eigen-oscillations is discussed and results of numerical studies so far made are reviewed for the vibrational stability of various stellar models against non-radial oscillations. It is found that many of nonradial p-modes of high tesseral harmonics are likely excited in various stars of the HR diagram and that they possibly manifest themselves as non-thermal velocity fields in the stellar atmosphere.


Stellar Model Stellar Atmosphere Radial Oscillation Propagation Diagram Ionization Zone 
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  1. Ando, H. 1976, Publ. Astron. Soc. Japan, 28, 517.Google Scholar
  2. Ando, H. and Osaki, Y. 1975, Publ. Astron. Soc. Japan, 27, 581.Google Scholar
  3. Christy, R. F. 1962, Astrophys. J., 136, 887.CrossRefGoogle Scholar
  4. Deubner, F.-L. 1975, Astron. Astrophys., 44, 371.Google Scholar
  5. Deubner, F.-L. 1977, in The Energy Balance and Hydrodynamics of the Solar Chromoaphere and Corona, ed. R.-M. Bonnet and Ph. Delache (G. de Bussac, Clermont-Ferrand), p.45.Google Scholar
  6. Deubner, F.-L., Ulrich, R. K., and Rhodes, E. J., Jr. 1979, Astron. AstroPhys., 72, 177.Google Scholar
  7. Dziembowski, W. 1971, Acta Astron., 21289.Google Scholar
  8. Dziembowski, W. 1977, Acta Astron.,27 95.Google Scholar
  9. Eckart, C. 1960, Hydrodynamics o-E-Oceans and Atmospheres (Pergamon Press, London).Google Scholar
  10. Goldreich, P. and Keeley, D. A. 1977, Astrophys. J., 211, 934.CrossRefGoogle Scholar
  11. Lucy, L. B. 1976a, Astrophys. J., 206, 499.CrossRefGoogle Scholar
  12. Lucy, L. B. 1976b, Paper read at IAU Colloq. No.29 (Budapest, Sept. 1975).Google Scholar
  13. Moore, D. W. and Spiegel, E. A. 1966, Astrophys. J., 143, 871.CrossRefGoogle Scholar
  14. Osaki, Y. 1977, Publ. Astron. Soc. Japan, 29, 235.Google Scholar
  15. Shibahashi, H. and Osaki, Y. 1976, Publ. Astron. Soc. Japan, 28, 199.Google Scholar
  16. Smith, M. A. 1977, Astrophys. J., 215,574.CrossRefGoogle Scholar
  17. Unno, W. 1977, in Problems Stellar Convection, ed. E. A. Spiegel and J.-P. Zahn Springer-Verlag, Berlin), p.315.Google Scholar
  18. Unno, W., Osaki, Y., Ando, H., and Shibahashi, H. 1979, Nonradial Oscillations of Stars (University of Tokyo Press, Tokyo).Google Scholar
  19. Unno, W. and Spiegel, E. A. 1966, Publ. Astron. Soc. Japan, 18, 85.Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Yoji Osaki
    • 1
  1. 1.Department of AstronomyUniversity of TokyoTokyoJapan

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