Multi-Mode Oscillations in Classical Cepheids and RR Lyrae-Type Stars

Abstract

I review different types of multi-mode pulsations observed in classical Cepheids and in RR Lyrae-type star. The presentation concentrates on the newest results, with special emphasis on recently detected nonradial oscillations.

8 pages, 4 figures, invited review, to appear in the conference proceedings of IAU Symp. 301 "Precision Asteroseismology, Celebration of the Scientific Opus of Wojtek Dziembowski", Wrocław, Poland, August 2013

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• Copy the dynamics using a learning machine
• Simple nonlinear models suggest variable star universality
• Four 'Peculiar' RRd Stars Observed by K2