Advertisement

Linear, nonadiabatic pulsation calculations for models of upper main sequence and β cephei stars

  • H. Saio
  • J. P. Cox
  • C. J. Hansen
  • B. W. Carroll
2. β Cephei and other Early-Type Variables
Part of the Lecture Notes in Physics book series (LNP, volume 125)

Abstract

Equations for linear nonadiabatic pulsation and the method of their solution are discussed in some detail. The numerical results presented concern mainly 7 Mδ stellar models in early evolutionary phase. A driving zone at a temperature of 1.5 x 105 K was found to be present for both radial and nonradial modes, but no net pulsational instability was observed. Effects of rotation on pulsation frequencies and on stability are also discussed.

Keywords

Radiation Pressure Lagrangian Variation Maximum Instability Early Evolutionary Phase Eulerian Variation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aizenman, M.L., Hansen, C.J. and Ross, R.R. 1975, Ap. J., 201, 387.Google Scholar
  2. Ando, H. and Osaki, Y. 1975, Publ. Astron. Soc. Japan, 27, 581.Google Scholar
  3. Buta, R.J. and Smith, M.A. 1979, Ap. J.,in press.Google Scholar
  4. Cox, J.P. 1967, in Aerodynamic Phenomena in Stellar Atmospheres (I.A.U. Symp. No. 28), (ed. R.N. Thomas; London: Academic Press).Google Scholar
  5. Cox, J.P. 1974, Rep. Prog. Phys., 37, 563.Google Scholar
  6. Cox, J.P. and Giuli, R.T. 1968, Principles of Stellar Structure (New York: Gordon and Breach).Google Scholar
  7. Cox, J.P. and Stellingwerf, R.F. 1979, Publ. A.S.P., (in press).Google Scholar
  8. Fowler, W.A., Caughlan, G.R. and Zimmerman, B.A. 1975, Ann. Rev. Astron. Astrophys., 13, 69.Google Scholar
  9. Hansen, C.J., Cox, J.P. and Carroll, B.W. 1978, Ap. J., 226, 210.Google Scholar
  10. Iben, I., Jr. 1975, Ap. J., 196, 525.Google Scholar
  11. Osaki, Y. 1977, Publ. Astron. Soc. Japan, 29, 235.Google Scholar
  12. Smith, M.A. 1980, these proceedings.Google Scholar
  13. Smith, M.A. and McCall, M.L. 1978, Ap. J., 223, 221.Google Scholar
  14. Stellingwerf, R.F. 1975, Ap. J., 195, 441.Google Scholar
  15. Stellingwerf, R.F. 1978, Ap. J., 83, 1184.Google Scholar
  16. Stellingwerf, R.F. 1979, Ap. J., 227, 935.Google Scholar
  17. Unno, W. and Spiegel, E.A. 1966, Publ. Astron. Soc. Japan, 18, 85.Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • H. Saio
    • 1
  • J. P. Cox
    • 1
  • C. J. Hansen
    • 1
  • B. W. Carroll
    • 1
  1. 1.Joint Institute for Laboratory AstrophysicsNational Bureau of Standards and University of ColoradoUSA

Personalised recommendations