Fig. 6.

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Velocity field (moment 1) for NGC 5068. Pixels with an H I column density below NH I = 5.9 × 1018 cm−2 (S/N = 3) are masked. The colourbar in the bottom of the image indicates the velocity of the gas, the grey contours are spaced 10 km s−1 apart with the black contour indicating the systemic velocity, vsys = 667 km s−1. The dotted magenta ellipse is centred on the optical centre of the galaxy and represents the optical size of the galaxy.
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