Table 4
Mean radial velocities ( 
) and standard deviations (σ) of the stellar associations identified within 30 Doradus.
| Region | No. of stars | Radius | α | δ | ± σ |
| [′] | [J2000.0] | ||||
|
|
|||||
| All | 298 | ... | ... | ... | 270.4 ± 12.4 |
|
|
|||||
| NGC 2070 | 78 | 2.40 | 05 38 42.0 | −69 06 02.0 | 271.2 ± 12.4 |
| NGC 2060 | 22 | 2.40 | 05 37 45.0 | −69 10 15.0 | 273.7 ± 13.4 |
| Hodge 301 | 14 | 0.33 | 05 38 17.0 | −69 04 01.0 | 261.8 ± 5.5 |
| SL 639 | 11 | 0.33 | 05 39 39.4 | −69 11 52.1 | 253.5 ± 3.9 |
| Field | 173 | ... | ... | ... | 271.3 ± 11.8 |
|
|
|||||
| All (excl. H 301/SL 639) | 273 | ... | ... | ... | 271.6 ± 12.2 |
Notes. These statistics exclude the nine candidate runaways identified in Table 5. For consistency, the central positions adopted for NGC 2060 and NGC 2070 are those used by Sana et al. (2013). Approximate centres for Hodge 301 and SL 639 were adopted using the coordinates of WB97-5 (Walborn & Blades 1997) and VFTS 828, respectively.
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