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Fig. 1.

image

VV 655 and NGC 4418 illustrated in a reproduction of a KiDS DR4 g-band archival image (Kuijken et al. 2019); the galaxies are separated by a projected distance of 184″ (30 kpc). The SALT-RSS longslit is shown in blue, and the SDSS fibers are indicated in green. The inset shows the locations of r1–r4 on an enlarged image of VV 655. The SALT observations allow the gas-phase chemical abundances and any kinematic disturbances in the ionized gas to be characterized across the bodies of both galaxies.

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