| Star | Alias | Sp Type | V(mag) | Blue? | H-alpha? | HDE269810 | Sk-67 211 | O2III(f*) | 12.27 | UVES+SSO | UVES + CTIO + SSO | Sk-66 172 | O2III(f*)+OB | 13.13 | CTIO | Sk-70 91 | O2III(f*)+OB | 12.78 | UVES | CTIO | Mk42 | O3If/WN | 12.91 | UVES + HST/FOS | UVES | Sk-70 60 | O4Vor O5V((f)) | 13.85 | UVES+CASLEO | Sk-67 69 | O4III(f) | 13.09 | SSO | CTIO + SSO | HDE270145 | Sk-70 115 | O4III | 12.24 | UVES + SSO | UVES + CTIO + SSO | HDE269676 | Sk-71 45 | O4-5III(f) | 11.51M | CTIO | HDE269698 | Sk-67 166 | O4If+ | 12.27 | UVES | UVES + CTIO + SSO | Sk-67 167 | O4Inf+ | 12.54 | SSO | CTIO + SSO | Sk-70 69 | O4-5V | 13.90 | UVES + CASLEO | UVES | Sk-66 18 | O6V | 13.50 | CTIO | Sk-66 100 | O6II(f) | 13.26 | SSO | CTIO + SSO | HDE269357 | Sk-69 104 | O6Ib(f) | 12.10 | UVES+SSO | CTIO + SSO | Sk-67 111 | O6Ia(n)fp var | 12.57 | UVES+SSO | UVES + CTIO + SSO | HDE270952 | Sk-65 22 | O6Iaf+ | 12.07 | UVES+UCLES | UVES + CTIO + SSO | Sk-71 50 | O6.5II | 13.44 | BI208 | O7V O6.5V | 13.96 | UVES+CASLEO | CTIO | BI229 | O7III or O7V | 12.95 | UVES + CASLEO | UVES+ CTIO | BI272 | O7IIor O7III | 13.28 | UVES +CASLEO | UVES+ CTIO | Sk-67 191 | O8V or O8.5III | 13.46 | CASLEO | CTIO | BI173 | O8II | 13.00 | CASLEO | CTIO | Sk-65 44 | O9V | 13.65 | Sk-67 101 | O8II((f)) | 12.63 | UVES + SSO | UVES+ SSO | Sk-69 124 | O9Ib or O9II | 12.81 | CASLEO | CTIO | Sk-68 3 | O9I | 13.13 | BI170 | O9.5Ib | 13.09 | UVES + SSO | UVES+ CTIO + SSO | HDE268605 | Sk-67 5 | O9.7Ib | 11.34 | UVES+SSO | CTIO + SSO | Sk-65 21 | O9.7Iab | 12.02 | CTIO | Sk-66 169 | O9.7Ia+ | 12.56 | UVES+UCLES | CTIO + SSO | HDE269896 | Sk-68 135 | ON9.7Ia+ | 11.36 | UVES+UCLES | SSO | Sk-70 79 | B0III | 12.73 | HDE268960 | Sk-69 59 | B0Ia | 12.13 | CTIO | HDE269050 | Sk-68 52 | B0Ia | 11.54 | UVES+SSO | CTIO + SSO | Sk-67 76 | B0Ia | 12.42 | Sk-68 41 | B0.5Ia | 12.01 | UVES | UVES +CTIO | HDE268685 | Sk-67 14 | B1.5Ia | 11.52 | CTIO | Sk-67 169 | B1Ia | 12.18 | HDE268867 | Sk-69 52 | B2Ia | 11.50 | UVES | CTIO | HDE268623 | Sk-66 1 | B2Ia | 11.61 | Sk-66 118 | B2Iab | 12.81 | HDE269371 | Sk-67 78 | B3Ia | 11.26 | HDE269009 | Sk-70 50 | B3Ia | 11.20 | HDE269777 | Sk-67 199 | B3Ia | 11.04 | --> |