Nonradial Oscillations in Classical Pulsating Stars. Predictions and Discoveries
arXiv:1512.03708
Abstract
After a brief historical introduction and recalling basic concepts of stellar oscillation theory, I focus my review on interpretation of secondary periodicities found in RR Lyrae stars and Cepheids as a manifestation of nonradial mode excitation.
Invited talk at RRL2015 conference, to appear in the Communications from the Konkoly Observatory of the Hungarian Academy of Sciences