Maintenance of the Pulsation in Cepheid Variables

descriptionPublicationkeyboard_double_arrow_right Article 31 Jul 1937 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 140, pages 195-195 (issn: 0028-0836, eissn: 1476-4687,

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Authors: J. WOLTJER;

doi: 10.1038/140195a0

Maintenance of the Pulsation in Cepheid Variables

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Abstract

THE oscillations induced in the principal modes of vibration of a star by a free oscillation in one of them, generally of the second order in the corresponding free amplitude, are unimportant unless magnified by resonance ; so seems the evidence from Miss H. A. Kluyver's analysis1. Hence, the motion in a Cepheid variable may be closely approximated to by the superposition of the oscillations of two modes of vibration, a free one and a forced one with half the period.

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