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Unusual Mode Changes in the δ Scuti Type Variable Star FL Cancri

Published online by Cambridge University Press:  12 April 2016

V.P. Goranskij  and
A.V. Kusakin
V.P. Goranskij
Affiliation:
Sternberg Astronomical Institute, Moscow University, Russia
A.V. Kusakin
Affiliation:
Sternberg Astronomical Institute, Moscow University, Russia

Abstract

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On the base of 105 hour photoelectric monitoring, we show that FL Cnc is a multiperiodic δ Set type variable with rapid night-tonight changes of the amplitudes of the periodic components in the Fourier spectra. We observed an event of pulsating frequency doubling on a time scale of a week, which was treated as an azimuthal mode change.

Type
Part 2.4. Delta Scuti Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 330 - 331
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Deeming, T.J. 1975, Ap&SS, 36, 137 Google Scholar
Kusakin, A.V. 1994, IBVS, No 4001 Google Scholar
Kusakin, A.V. & Goranskij, V.P. 1996, Astron. Reports, 40, 221 Google Scholar