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Paper: Difference Frequencies of Non-radial Pulsation Modes and Repetitive Outbursts in Classical Be Stars
Volume: 508, The B[e] Phenomenom: Forty Years of Studies
Page: 93
Authors: Baade, D.; Rivinius, T.; Pigulski, A.; Carciofi, A.; BEST
Abstract: Space photometry has revealed rich pulsation spectra in classical Be stars. Often frequency pairs can be found that differ by nearly the frequency of a third genuine stellar variability. The lowest currently known of these so-called difference (or Δ) frequencies reach 0.03 c/d, which is the upper limit of outburst frequencies. The potential of such slow variations for pulsation-assisted mass loss is discussed.
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