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Table 1.

Sizes of samples discussed in the text.

Sample Binary type
Unknown Close(a) Uncertain Other
All 3427 60 12 44
Gaia match(b) 1561 50(c) 10 40
radius ≥10″ 1320 40 10 42

Extended (Gaia match and radius ≥10″)

Extended(d) 602 35 8 38
D > 8 71 27 2 10
RUWE < 3 583 34 8 33

Variable (extended and D > 8 and RUWE < 3)

Variable 58(e) 27 2 5

Notes. Each section includes the conditions from the sections above.

(a)

Short-period binaries.

(b)

Has matched Gaia DR2 source in the Chornay & Walton (2020) catalogue with reliability > 0.5.

(c)

Sample shown in Fig. 2.

(d)

Sample shown in Fig. 1.

(e)

New binary candidates.

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