Linked from
The 29 pages that link to Peculiar velocity, each with the reason it gives.
Radial velocityRelated: It separates local motion from recession associated with cosmic expansion.
Local VoidRelated: Galaxy motions around the Local Void help reveal its gravitational influence.
Local SheetRelated: These motions help map the Local Sheet’s flow pattern.
South Pole WallRelated: Local motions can distort distances inferred directly from galaxy redshifts.