Open Access

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.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.