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Fig. 7.

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Phase-space diagram of the Dorado group. LSB-D is shown in red, while previously known H I rich galaxies are shown in blue and new H I detections in green. The group’s centre (NGC 1553) is at the zero coordinates, the dashed-dotted lines mark the virialised region of the Dorado group. The caustic curves (dashed lines) are defined by the escape velocity of the group.

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