Open Access
Table 2.
Candidates of truly binary open clusters.
| Pairs # | Cluster | μαcosδ | μδ | ω | Members | τ | Av | Sep |
|---|---|---|---|---|---|---|---|---|
| (mas yr−1) | (mas yr−1) | (mas) | (Myr) | (mag) | (pc) | |||
| 1 | NGC 869 | −0.7(1) | −1.1(1) | 0.40(4) | 503 | 15.14 | 1.69 | 21.01 |
| NGC 884 | −0.6(1) | −1.1(1) | 0.40(4) | 322 | 17.78 | 1.72 | ||
| 2 | UBC 46⋆ | −0.8(2) | −1.2(2) | 0.40(3) | 65 | 112.20 | 1.35 | 29.30 |
| NGC 869 | −0.7(1) | −1.1(1) | 0.40(4) | 503 | 15.14 | 1.69 | ||
| 3 | UBC 192⋆ | −0.4(2) | −1.2(1) | 0.40(3) | 78 | 48.98 | 1.28 | 38.59 |
| NGC 884 | −0.6(1) | −1.1(1) | 0.40(4) | 322 | 17.78 | 1.72 | ||
| 4 | UBC 461 | −2.7(1) | 3.11(8) | 0.29(2) | 72 | 47.86 | 0.45 | 27.12 |
| UBC 462⋆ | −2.67(8) | 3.04(4) | 0.29(2) | 8 | 39.81 | 0 | ||
| 5 | Collinder 135 | −10.0(4) | 6.2(4) | 3.3(1) | 324 | 26.30 | 0.01 | 26.42 |
| UBC 7 | −9.7(2) | 7.0(2) | 3.56(6) | 77 | 31.62 | 0.1 | ||
| 6 | NGC 2659 | −5.3(1) | 5.0(1) | 0.45(7) | 82 | 43.65 | 1.21 | 49.45 |
| UBC 482 | −5.2(1) | 5.0(2) | 0.45(3) | 97 | 26.92 | 0.88 | ||
| 7 | FSR 0198 | −3.6(2) | −6.6(2) | 0.49(5) | 82 | 4.68 | 2.49 | 28.38 |
| Teutsch 8 | −3.5(1) | −6.7(3) | 0.49(7) | 28 | 3.98 | 2.2 | ||
| 8 | Collinder 394 | −1.5(2) | −5.9(2) | 1.39(6) | 156 | 91.20 | 0.54 | 11.49 |
| NGC 6716 | −1.5(2) | −6.0(2) | 1.41(8) | 76 | 97.72 | 0.43 | ||
| 9 | Alessi 43 | −5.5(3) | 3.9(3) | 1.03(8) | 284 | 11.48 | 0.99 | 19.76 |
| Collinder 197 | −5.8(3) | 3.9(4) | 1.03(9) | 229 | 14.13 | 1.42 | ||
| 10 | FSR 1297⋆ | −2.8(2) | 3.3(2) | 0.75(5) | 25 | 41.13 | ||
| NGC 2362 | −2.8(2) | 3.0(2) | 0.74(7) | 144 | 5.75 | 0.37 | ||
| 11 | Antalova 2 | 2.0(3) | −1.7(3) | 0.84(7) | 27 | 12.02 | 1.15 | 47.02 |
| NGC 6383 | 2.6(3) | −1.7(2) | 0.9(1) | 245 | 3.98 | 1.3 | ||
| 12 | Negueruela 1 | −3.0(2) | −1.3(1) | 0.29(6) | 52 | 16.98 | 3.39 | 18.31 |
| Teutsch 23⋆ | −3.0(1) | −1.39(7) | 0.29(4) | 28 | 5.62 | 2.69 | ||
| 13 | UBC 547 | −0.7(1) | −2.0(1) | 0.31(3) | 175 | 15.14 | 1.63 | 23.54 |
| UBC 549 | −0.81(9) | −1.93(8) | 0.31(2) | 20 | 85.11 | 1.92 | ||
| 14 | Stock 20 | −3.24(6) | −1.12(6) | 0.34(3) | 38 | 19.05 | 1.09 | 23.74 |
| UBC 410 | −3.1(1) | −1.0(1) | 0.34(3) | 36 | 38.02 | 0.97 |
Notes. The given parameters are the same as those in Table 1. The fitting isochrones of the clusters marked with asterisks are not suitable for the cluster members, which require an adjustment of the parameters to find adequate fittings.
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