Fig. 6
As Fig. 3, but now plotting each object as a circle, the area of which is proportional to 
, which is proportional to the impulse transferred to the Oort cloud per unit mass of encountering star. (The plotting symbol is a circle with a diagonal cross, but the latter is not apparent in the smallest symbols.) The values for the plotted symbols range from 0.0088 to 3.5 s km-1 pc-2.
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