Double Mode Cepheids with Amplitude Modulation
arXiv:astro-ph/0510140
Abstract
Recent search for multiperiodicity in LMC Cepheids (Moskalik, Kolaczkowski & Mizerski 2004) has led to discovery of periodic modulation of amplitudes and phases in many of the first/second overtone (FO/SO) double mode pulsators. We discuss observational characteristics and possible mechanisms responsible for this behaviour.
2 pages, 2 figures, presented at conference "Stellar Pulsation and Evolution", Monte Porzio Catone, 19-24 June 2005