Nonradial Pulsations in Classical Cepheids of the Magellanic Clouds

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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.
4 pages, 2 figures, to appear in "Variable Stars in the Local Group", ASP Conference Series, eds. D. W. Kurtz & K. Pollard

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/6960

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0311157
 http://arxiv.org/abs/astro-ph/0311157

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arXiv