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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