EDP Sciences
Free access
Issue
A&A
Volume 371, Number 2, May IV 2001
Page(s) 667 - 671
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20010430


A&A 371, 667-671 (2001)
DOI: 10.1051/0004-6361:20010430

Period-doubling behavior in very slow classical cepheid models

T. Aikawa

Tohoku Gakuin University, Izumi-ku, Sendai 981-31, Japan

(Received 4 April 2000 / Accepted 9 March 2001 )

Abstract
In a search of nonlinear models for very long-period Cepheids, we found models with period-doubling behaviors. The feature is quite similar to that mentioned by Carson & Stothers (1984). Here, we report the main features of these models, and briefly discuss the origin of the period-doubling behavior.


Key words: stars: variables: Cepheids stars: variables: general-stars: oscillations

Offprint request: T. Aikawa, aikawa@ghi.tohoku-gakuin.ac.jp

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