Integral field spectroscopy of NGC 2855 and NGC 7049

We present the ionized gas bidimensional velocity field of two spiral galaxies (NGC 2855 and NGC 7049) which show an S-distortion of the isovelocities. We performed models of the velocity field in order to investigate the possible presence of an inner polar disk which generate such a kinematic behaviour, or the presence of a strong internal warp of the gaseous disk. The decomposition of the surface brightness map of NGC 7049 seems to indicate the presence of an orthogonal decoupled component, while the case of NGC 2855 seems to be better explained in terms of a strong central warp of the gaseous disk.