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The Blazhko Effect Unravelled?1

Published online by Cambridge University Press:  12 April 2016

K. Kolenberg ,
C. Aerts ,
M. Chadid  and
D. Gillet
K. Kolenberg*
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
C. Aerts
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
M. Chadid
Affiliation:
Observatoire de la Côte d’Azur, Nice, France
D. Gillet
Affiliation:
Observatoire de la Haute-Provence, Saint-Michel, France
*
1 Aspirant Fellow, Fund for Scientific Research, Flanders; e-mail: katrienk@ster.kuleuven.ac.be

Abstract

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A detailed frequency analysis on ELODIE observations of the Blazhko star RR Lyrae (Chadid et al., 1999) clearly revealed the importance of non-linear effects upon the radial fundamental mode (with frequency fP), and a multiplet structure with a separation equal to the Blazhko frequency (f/B) around the main frequency and its harmonics. These results provided strong evidence for the presence of non-radial modes in the star. The identification of these non-radial modes is the following step in our work.

Type
Part 3. Nonlinear Effects in Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 414 - 415
Copyright
Copyright © Astronomical Society of the Pacific 2002

Footnotes

1

The RR Lyrae spectra were gathered with the 1.93m telescope of the Haute-Provence Observatory in France in 1996 and 1997.

References

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