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The rich p-mode pulsation spectrum of HD 60435

Published online by Cambridge University Press:  03 August 2017

J.M. Matthews ,
D.W. Kurtz  and
W.H. Wehlau
J.M. Matthews
Affiliation:
University of Western Ontario
D.W. Kurtz
Affiliation:
University of Cape Town
W.H. Wehlau
Affiliation:
University of Western Ontario

Extract

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Twelve cool Ap stars are known at present to undergo rapid light oscillations at low amplitude (ΔB < 0m.012) and with periods of minutes. These rapidly oscillating Ap (roAp) stars also exhibit amplitude modulation with timescales of days, which correspond to the magnetic/rotation periods (when those have been measured). In at least one case (HR 3831), 180° phase shifts in the dominant oscillation are seen twice per modulation cycle.

Type
Chapter 4: Asteroseismology: Results and Prospects
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 261 - 264
Copyright
Copyright © Reidel 1988 

References

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