Gaia Data Release 1
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Table 8

Comparisons between TGAS and Hipparcos astrometric parameters in cluster fields.

Cluster N Δϖ UWSD Δμα UWSD Δμδ UWSD

ComaBer 28 −0.14 ± 0.22 1.44 −0.08 ± 0.40 2.77 0.17 ± 0.34 3.69
ComaBer 758 −0.01 ± 0.05 1.22 0.14 ± 0.05 1.42 0.21 ± 0.04 1.73
Pleiades 44 0.72 ± 0.17 1.05 0.28 ± 0.30 1.80 0.28 ± 0.19 1.36
Pleiades 241 0.36 ± 0.09 1.30 0.25 ± 0.11 1.65 −0.22 ± 0.11 2.08
Praesepe 23 0.19 ± 0.21 1.18 0.77 ± 0.32 1.87 0.02 ± 0.21 1.77
Praesepe 123 0.30 ± 0.13 1.35 −0.07 ± 0.13 1.36 −0.32 ± 0.11 1.79
alphaPer 50 −0.41 ± 0.14 1.20 −0.24 ± 0.15 1.60 −0.72 ± 0.18 2.06
alphaPer 245 −0.05 ± 0.07 1.24 −0.08 ± 0.08 1.63 −0.38 ± 0.08 1.72
IC 2391 7 0.03 ± 0.33 1.50 0.29 ± 0.25 1.66 −0.18 ± 0.33 2.29
IC 2391 390 −0.05 ± 0.04 1.19 0.18 ± 0.05 1.76 −0.06 ± 0.04 1.67
IC 2602 19 −0.01 ± 0.15 1.17 0.12 ± 0.12 1.11 0.28 ± 0.19 2.13
IC 2602 394 0.03 ± 0.04 1.29 0.18 ± 0.06 2.05 0.01 ± 0.05 1.77
Blanco 1 8 −0.26 ± 0.39 1.15 0.16 ± 0.35 1.03 −0.11 ± 0.34 1.60
Blanco 1 98 0.14 ± 0.16 1.41 0.10 ± 0.15 1.46 0.08 ± 0.28 4.18
NGC 2451A 4 −0.20 ± 0.24 0.69 −0.28 ± 0.31 2.70 −0.41 ± 0.37 2.68
NGC 2451A 224 0.00 ± 0.05 1.16 0.05 ± 0.04 1.54 0.11 ± 0.05 1.41
NGC 6475 11 0.23 ± 0.22 0.93 −1.02 ± 0.31 1.33 0.35 ± 0.15 1.09
NGC 6475 64 0.13 ± 0.14 1.04 −0.54 ± 0.26 1.78 0.23 ± 0.11 1.44
NGC 7092 5 0.05 ± 0.26 1.03 0.08 ± 0.17 0.90 0.15 ± 0.51 2.87
NGC 7092 63 −0.01 ± 0.10 1.22 −0.01 ± 0.12 1.69 −0.10 ± 0.14 2.20
NGC 2516 5 0.27 ± 0.21 0.95 0.47 ± 0.30 1.84 0.43 ± 0.19 1.15
NGC 2516 64 0.11 ± 0.09 1.18 0.46 ± 0.11 1.56 −0.04 ± 0.13 1.75
NGC 2232 3 −0.56 ± 0.23 0.55 0.18 ± 0.20 0.55 −0.11 ± 0.19 0.62
NGC 2232 41 0.19 ± 0.17 1.36 −0.04 ± 0.33 3.19 0.12 ± 0.19 2.20
IC 4665 6 0.35 ± 0.35 1.00 −0.46 ± 0.98 3.36 0.13 ± 0.36 1.83
IC 4665 28 −0.48 ± 0.18 0.96 0.46 ± 0.25 1.85 0.16 ± 0.16 1.77
NGC 6633 4 0.50 ± 0.43 0.93 −0.56 ± 0.62 1.54 0.13 ± 0.07 0.18
NGC 6633 25 −0.29 ± 0.22 1.32 −0.38 ± 0.31 2.17 0.59 ± 0.20 1.59
Coll 140 3 0.24 ± 0.83 2.10 −0.31 ± 0.31 1.23 −0.32 ± 0.20 0.67
Coll 140 52 0.12 ± 0.12 1.09 0.11 ± 0.20 2.99 0.30 ± 0.19 2.16
NGC 2422 2 1.46 ± 0.55 0.72 0.29 ± 0.24 0.38 0.10 ± 0.66 1.16
NGC 2422 33 0.24 ± 0.20 1.31 0.09 ± 0.18 1.66 0.26 ± 0.14 1.54
NGC 3532 4 0.32 ± 0.50 1.40 0.47 ± 0.13 0.38 −0.29 ± 0.43 1.49
NGC 3532 63 −0.04 ± 0.11 1.15 0.37 ± 0.17 2.23 −0.07 ± 0.16 2.33
NGC 2547 8 −0.72 ± 0.20 0.80 −0.20 ± 0.27 1.23 −0.07 ± 0.28 1.36
NGC 2547 48 −0.26 ± 0.14 1.50 0.49 ± 0.18 2.39 −0.09 ± 0.10 1.52

Notes. For each cluster: first line for cluster members, second line for the remaining stars in the field of the cluster. Only stars with clean 5-parameter solutions in the Hipparcos catalogue were used. For each value is given the mean, error on the mean and unit-weight standard deviation of the differences.

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