Dynamical wavelet spectra of the line profile variations in the spectra of the triple star delta Ori A

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Pulsation mode for delta Ori A V(theta,phi) = A* ei(m*phi + sigma*t) => The phase velocity of NRP pattern: omega(NRP)=2*pi*sigma/m = 40 rad/d   Pulsation mode: (l, m)=(2, -2)   for m=2 omega(NRP)=2*pi*sigma/2   Wavelet analysis:   Tcross = 3-4h - the crossing time for the Vsini band by the wavelet spectral feature.   Fouriaer analysis: sigmaLPV = 6 d-1, PLPV = 4.0h Tcross = PLPV in accordance with our hypothesis about pulsation mode.