Nonradial Pulsations in Classical Cepheids of the Magellanic Clouds
Astrophysics
2007-05-23 v1
Abstract
We have performed systematic frequency analysis of the LMC Cepheids observed by OGLE project. Several new types of pulsation behaviour are identified, including triple-mode and amplitude-modulated double-mode pulsations. In ~10% of the first overtone Cepheids we find low amplitude secondary periodicities corresponding to nonradial modes. This is the first evidence for excitation of nonradial oscillations in Classical Cepheid variables.
Cite
@article{arxiv.astro-ph/0311157,
title = {Nonradial Pulsations in Classical Cepheids of the Magellanic Clouds},
author = {Pawel Moskalik and Zbigniew Kolaczkowski and Tomasz Mizerski},
journal= {arXiv preprint arXiv:astro-ph/0311157},
year = {2007}
}
Comments
4 pages, 2 figures, to appear in "Variable Stars in the Local Group", ASP Conference Series, eds. D. W. Kurtz & K. Pollard