Position velocity diagrams for subtracted image of FV Tau c; The radial velocity of the star could not be found, so it's assumed to be \(0\ \mathrm{km\ s^{-1}}\) for the x-axis, which shows the velocity with respect to the feature rest wavelength in the velocity frame of the star and the y-axis the distance along the slit. The emission from the two stars has been removed and only the resolved emission can be seen. In the left panel, resolved emission is visible around \(0\ \mathrm{km\ s^{-1}}\).