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Fig. 7


ROSAT image centered at the position of RX J075243.6+455653. The open circles show the position of other groups and galaxy clusters reported by NED within 2 degrees from the group center. The red symbols represent objects with radial velocities larger than 18 000 km s-1 or smaller than 12 000 km s-1. Blue circles show groups with radial velocities in the range 12 000 <V< 18 000 km s-1.

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