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Changes of the Physical State in Semiregular Variables

Published online by Cambridge University Press:  12 April 2016

L. L. Kiss ,
Gy. Szabó ,
K. Szatmáry  and
J. A. Mattei
L. L. Kiss
Affiliation:
Department of Experimental Physics & Astronomical Observatory, JATE University, H-6720 Szeged, Dóm tér 9., Hungary
Gy. Szabó
Affiliation:
Department of Experimental Physics & Astronomical Observatory, JATE University, H-6720 Szeged, Dóm tér 9., Hungary
K. Szatmáry
Affiliation:
Department of Experimental Physics & Astronomical Observatory, JATE University, H-6720 Szeged, Dóm tér 9., Hungary
J. A. Mattei
Affiliation:
AAVSO, 25 Birch Street, Cambridge MA02138-1205, USA

Abstract

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We present a progress report on a detailed analysis of long-term (70–90 years) visual observations for seven semiregular variables. Fundamental changes of the physical state (amplitude and/or frequency modulations, mode change and switching) are studied with conventional Fourier- and wavelet analyses. Besides two examples of repetitive mode changes we report a simple geometric model of a rotationally induced amplitude modulation in RY Ursae Majoris.

Type
Part 2. Variability of High-Luminosity Stars
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 117 - 118
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Asida, S.M. & Tuchman, Y. 1995, ApJ, 455, 286 CrossRefGoogle Scholar
Barnbaum, C., Morris, M., & Kahane, C. 1995, ApJ, 450, 862 Google Scholar
Bedding, T.R., Zijlstra, A.A., Jones, A., & Foster, G. 1998, MNRAS, 301, 1073 Google Scholar
Kiss, L.L., Szatmáry, K., Cadmus, R.R. Jr., & Mattei, J.A. 1999, A&A, 346, 542 Google Scholar
Xiong, D.R., Ding, L., & Cheng, Q.L. 1998, ApJ, 499, 355 Google Scholar