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Fig. 8


Radial variation of parameters resulting from the H I data cube modeling for UGC 11919 for the warped model (black) and bisymmetric model (red in online version, grey in printed version). Surface gas densities and velocity curves are by construction corrected for inclination. RA2A and RO2A are the amplitudes of the second order harmonics of radial and tangential velocity, RO2P is the phase of RO2A. G1A is the amplitude of a Gaussian surface-brightness distortion representing two spiral arms and G1P is the phase (azimuthal angles) of this distortion.

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