Table 3: Binarity data for Sco OB2, showing the number of companion stars found with the different techniques. Literature data and the new companion stars described in this paper are included. The terms "visual'', "astrometric'', and "spectroscopic'' pertain only to available observations and not to in intrinsic properties of the systems. Note that each companion of a multiple system is included individually.
Type B1-B3 B4-B9 A F GKM
Upper Scorpius
Single stars 3 13 20 17 10
Visual 15 9 12 3 2
Astrometric 0 3 1 2 3
Spectroscopic 11 12 0 0 0
Upper Centaurus Lupus
Single stars 3 22 41 43 22
Visual 15 23 29 7 8
Astrometric 2 1 3 5 2
Spectroscopic 11 6 1 1 0
Lower Centaurus Crux
Single stars 3 16 31 47 14
Visual 7 13 24 10 4
Astrometric 1 3 3 4 4
Spectroscopic 3 3 1 0 0
Scorpius OB2
Single stars 9 51 92 107 46
Visual 37 45 65 20 14
Astrometric 3 7 7 11 9
Spectroscopic 25 21 2 1 0


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