Table 1.
O-type stars used in this work.
| Object ID | SpT | d [kpc] | Age | Association | References |
|---|---|---|---|---|---|
| HD 64 568 | O3 V((f*))z | 4.25 |
NGC 2467, Pup OB1 | 1, 2 | |
| HD 93 128 | O3.5 V((fc))z | 2.363 |
0.3–0.5 Myr | Trumpler 14, Car OB1 | 1, 2, 6 |
| HD 155 913 | O4.5 Vn((f)) | 1.27 |
RCW 114 | 2, 3 | |
| HDE 319 699 | O5 V((fc)) | 1.67 |
1.9 Myr | NGC 6334, RCW 127 | 2, 3, 9 |
| HD 124 314 | O6 IV(n)((f)) | 1.75 |
– | 2, 3 | |
| HD 150 135 | O6.5 V((f))z | 1.148 |
1–5 Myr | NGC 6193, Ara OB1a | 1, 13, 8 |
| HDE 326 775 | O6.5 V(n)((f))z | 1.95 |
RCW 113 | 3, 14, 11 | |
| V3903 Sgr | O7 V(n)z + B0: V | 1.08 |
Sgr OB1 | 2, 3 | |
| HD 152 623 | O7 V(n)((f)) | 1.16 | 2–4 Myr | Trumpler 24, Sco OB1 | 12, 14 |
| BD −13° 4929 | O8 V + B0.5: V + B0.5: V | 1.697 |
1–2 Myr | NGC 6611 | 1, 5, 4 |
| HD 101 191 | O8 V | 2.82 |
IC 2944, Cru OB1 | 2, 3, 7 | |
| HDE 323 016 | O8.5 V | 2.13 |
– | 3, 10 | |
| HD 149 452 | O9 IVn | 1.34 |
RCW 108, Ara OB1ab | 2, 3 | |
| HD 76 341 | O9.2 IV | 1.33 |
RCW, VelOB1 | 2, 3 | |
| BD −13° 4928 | O9.5 V | 1.697 |
1–2 Myr | NGC 6611 | 1, 4 |
| CPD −41° 7721 | O9.7 V:(n) | 1.551 |
2–4 Myr | NGC 6231, Sco OB1 | 1, 14 |
| HD 123 056 | O9.5 IV(n) | 1.53 |
– | 2, 3 | |
| HD 152 200 | O9.7 IV(n) | 1.551 |
2–4 Myr | NGC 6231, Sco OB1 | 2, 3 |
References. (1) Maíz Apellániz et al. (2022); (2) Sota et al. (2014); (3) Pantaleoni González et al. (2021); (4) Sana et al. (2009); (5) Martayan et al. (2008); (6) Sana et al. (2010); (7) Sana et al. (2011); (8) Baume et al. (2011); (9) Russeil et al. (2017); (10) Neckel & Chini (1981); (11) Arias et al. (2016); (12) Shull & Danforth (2019); (13) Maíz Apellániz et al. (2020); (14) Maíz Apellániz et al. (2016).
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