The orientation of each PV diagram cut from the high resolution cube, shown in panels b) to e), is indicated in panel A against a background SDSS r-band image with H i contours from the high resolution cube. The vertical axis in each PV diagram gives the velocity in km s-1 and the horizontal axis gives the offset in arc seconds as follows: diagram b) along an axis perpendicular, PA = 74°, to the major axis centred at the optical centre, 09:30:9.07 + 20:05:25, c) offset 20 arcsec east and parallel to the optical major axis PA = 164°, d) along the optical major axis, PA = 164°, centred at the optical centre 09:30:8.62 +20:05:56. e) Offset 20 arcsec west and parallel to the optical major axis PA = 164°. For diagrams c) to e) positive offset values are north of the optical centre. In diagram c) the arrow indicates the H i extension. The H i systemic velocity of the galaxy is 4336 km s-1 (Lewis et al. 1985). The black bars indicate the approximate size of the high resolution beam.
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