On the secular variation of amplitudes in double-mode Cepheids

Details On the secular variation of amplitudes in double-mode Cepheids On the secular variation of amplitudes in double-mode Cepheids

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.204.1193a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 204, Sept. 1983, p. 1193-1202.

Astronomy and Astrophysics

Astronomy

13

Cepheid Variables, Stellar Oscillations, Amplitude Distribution Analysis, Modal Response, Secular Variations

Scientific paper

Under the assumption that the resonant interactions among the fundamental, the first overtone and the third overtone radial modes cause the phenomenon of double periodicity of double-mode Cepheids, the secular variation of amplitudes is investigated theoretically. The magnitudes and period of the secular variation are determined in terms of mode-coupling constants. The possibility of alternate appearance of single and double periodicity in the vicinity of the resonance is suggested.

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