Abstract
Power spectra of the light curves of semiregular variables, based on visualmagnitude estimates spanning many decades, show clear evidence forstochastic excitation. This supports the suggestion byChristensen-Dalsgaard et al. (2001) that oscillations in these stars aresolar-like, i.e., stochastically excited by convection, with mode lifetimesranging from years to decades.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bedding, T.R. and Zijlstra, A.A.: 1998, ApJ 506, L47.
Bedding, T.R., Zijlstra, A.A., Jones, A. and Foster, G.: 1998, MNRAS 301, 1073.
Christensen-Dalsgaard, J., Kjeldsen, H. and Mattei, J.A.: 2001, ApJ 562, L141.
Dziembowski, W.A., Gough, D.O., Houdek, G. and Sienkiewicz, R.: 2001, MNRAS 328, 601.
Kiss, L.L., Szatmáry, K., Cadmus, R.R. and Mattei, J.A.: 1999, A&A 346, 542.
Szatmáry, K., Gál, J. and Kiss, L.L.: 1996, A&A 308, 791.
Toutain, T. and Fröhlich, C.: 1992, A&A 257, 287.
Wood, P.R., Alcock, C., Allsman, R.A. et al.: 1999, in: T. Le Bertre, A. Lebre and C. Waelken (eds.), IAU Symp. 191: Asymptotic Giant Branch Stars, 151.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bedding, T.R. Solar-like Oscillations in Semiregular Variables. Astrophysics and Space Science 284, 61–64 (2003). https://doi.org/10.1023/A:1023276310197
Issue Date:
DOI: https://doi.org/10.1023/A:1023276310197