Table 3
Fit parameters and RV members for the target star forming regions and OCs.
| Cluster(a) | RV(b) | 2σ clipping | 2σ membership | No. RV | Final fit of member list | ||
|---|---|---|---|---|---|---|---|
| (km s −1) | ⟨RV⟩ (km s−1) | σ (km s−1) | intervals | members | ⟨RV⟩ (km s−1) | σ (km s−1) | |
| NGC 6530 | −1.9 ± 7.2 (1) | 0.3 | 2.1 | [−3.8, 4.6] | 477 | 0.0 | 2.5 |
| ρ Oph | −7.0 ± 0.2 (2) | −6.4 | 2.1 | [−10.6, −2.2] | 48 | −6.6 | 1.0 |
| Trumpler 14 | −10.5 ± 6.9 (3) | −7.9 | 2.9 | [−13.7, −2.1] | 231 | −8.4 | 3.0 |
| Cha I | 14.6 ± 1.2 (4) | 15.7 | 1.1 | [13.5, 17.9] | 102 | 15.6 | 1.1 |
| NGC 2244 | 33.6 ± 0.7 (5) | 30.7 | 2.7 | [25.3, 36.1] | 143 | 30.5 | 2.7 |
| NGC 2264 | 20.2 ± 6.4 (3) | 20 2 | 2.5 | [15.2, 25.2] | 618 | 19.9 | 2.2 |
| λ Ori | 27.5 ± 0.4 (5) | 27.1 | 1.0 | [25.1, 29.1] | 208 | 27.3 | 1.0 |
| Col 197 | 35.8 ± 2.3 (3) | 20.8 | 1.1 | [18.6, 23.0] | 124 | 20.7 | 1.1 |
| NGC 2232 | 25.4 ± 0.9 (3) | 29.7 | 14.1 | [−0.2, 56.2] | 750 | 25.3 | 0.6 |
| IC 2391 | 15.3 ± 0.2 (3) | 15.4 | 2.3 | [10.5, 19.7] | 55 | 14.6 | 0.7 |
| IC 2602 | 17.4 ± 0.2 (3) | 13.2 | 10.2 | [−8.0, 34.0] | 309 | 17.5 | 0.6 |
| IC 4665 | −14.4 ± 0.8 (3) | −13.4 | 14.8 | [−43.0, 16.2] | 233 | −14.0 | 0.7 |
| NGC 6405 | −9.2 ± 0.8 (6) | −9.0 | 6.5 | [−22.0, 4.0] | 251 | −8.8 | 0.8 |
| Blanco 1 | 5.8 ± 0.1 (6) | 5.8 | 0.7 | [4.4, 7.2] | 141 | 5.8 | 0.6 |
| NGC 6067 | −39.9 ± 0.2 (1) | −38.1 | 3.3 | [−44.7, −31.5] | 209 | −37.8 | 2.0 |
| NGC 6649 | −8.9 ± 0.5 (3) | −10.3 | 3.8 | [−18.7, −1.9] | 32 | … (c) | … |
| NGC 2516 | 23.8 ± 0.2 (3) | 23.6 | 0.7 | [22.3, 25.1] | 460 | 23.8 | 0.8 |
| NGC 6709 | −7.8 ± 5 (1) | −7.7 | 10.3 | [−28.3, 12.9] | 322 | −9.4 | 0.7 |
| NGC 6259 | −32.8 ± 0.4 (3) | −32.2 | 3.3 | [−38.8, −25.6] | 125 | −32.5 | 2.5 |
| NGC 6705 | 36.0 ± 0.2 (3) | 35.6 | 1.9 | [31.8, 39.4] | 391 | 35.4 | 1.8 |
| Berkeley 30 | … (d) | 47.7 | 3.6 | [40.5, 54.9] | 78 | 48.1 | 3.0 |
| NGC 6281 | −5.0 ± 0.1 (3) | −4.8 | 1.9 | [−8.6, −1.0] | 82 | −4.5 | 0.7 |
| NGC 3532 | 5.4 ± 0.2 (3) | 5.3 | 0.9 | [3.5, 7.1] | 518 | 5.4 | 0.9 |
| NGC 4815 | −29.8 ± 0.3 (3) | −29.0 | 3.4 | [−36.4, −22.8] | 68 | −27.6 | 4.0 |
| NGC 6633 | −28.6 ± 0.1 (3) | −22.4 | 13.2 | [−49.0, 0.0] (e) | 617 | −28.3 | 0.9 |
| NGC 2477 | 7.9 ± 0.1 (3) | 8.1 | 1.0 | [6.1, 10.1] | 86 | 7.2 | 2.1 |
| Trumpler 23 | −61.4 ± 0.5 (3) | −61.3 | 1.8 | [−57.7, −64.9] | 51 | −62.0 | 1.5 |
| Berkeley 81 | 50.0 ± 0.7 (3) | 47.7 | 2.2 | [43.3, 52.1] | 69 | 48.2 | 0.3 |
| NGC 2355 | 36.9 ± 0.7 (3) | 36.2 | 0.9 | [34.4, 37.0] | 119 | 36.3 | 0.9 |
| NGC 6802 | 11.8 ± 0.4 (3) | 13.0 | 1.8 | [9.6, 16.6] | 77 | 12.0 | 0.7 |
| NGC 6005 | −25.6 ± 0.5 (3) | −25.5 | 3.2 | [−31.9, −19.1] | 174 | −24.6 | 1.1 |
| Pismis 18 | −28.5 ± 0.6 (3) | −29.7 | 2.8 | [−35.3, −24.1] | 41 | −28.2 | 0.8 |
| Melotte 71 | 51.3 ± 0.4 (3) | 51.6 | 0.7 | [50.2, 53.0] | 71 | 51.1 | 0.4 |
| Pismis 15 | 36.3 ± 0.7 (3) | 35.0 | 0.1 | [32.6, 37.4] | 93 | 35.2 | 0.8 |
| Trumpler 20 | −39.8 ± 0.2 (3) | −39.8 | 1.4 | [−42.6, −37] | 451 | −40.0 | 1.2 |
| Berkeley 44 | −7.6 ± 0.4 (3) | −8.8 | 0.4 | [−10.4, −7.2] | 39 | −8.8 | 0.7 |
| NGC 2243 | 59.6 ± 0.5 (3) | 59.5 | 0.6 | [58.3, 60.7] | 469 | 59.6 | 0.6 |
| M67 | 34.1 ± 0.1 (3) | 34.0 | 0.8 | [32.4, 35.6] | 110 | 33.9 | 0.8 |
Notes. (a)As stated earlier in the text, regarding the clusters γ Vel, NGC 2547 and NGC 2451 A and B, we directly used the selections obtained by several studies listed in Table 1. (b)References for the mean cluster RVs: (1) Conrad et al. (2017); (2) Rigliaco et al. (2016); (3) Soubiran et al. (2018); (4) López Martí et al. (2013); (5) Carrera et al. (2019); (6) Gaia Collaboration (2018b). (c)Final selection only consists of two members, final fit is not possible. (d)We could not find any prior RV measurements from the literature for this cluster. (e)The 2σ membership interval for this cluster has been obtained after excluding a large contaminant population in the middle of the distribution, as detailed in Appendix A.
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