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Table 1
List of the stars included in our analysis and the respective wavelength coverage.
| Star | Alias | SpT | (900–1160) FUSE | (1150–1700) HST | (1700–2370) HST | Aux. Opt. Magellan |
|---|---|---|---|---|---|---|
| AzV 469 | Sk 148 | O9 Iab(f) | LWRS | STIS E140M | – | – |
| AzV 372 | Sk 116 | O9.2 Iab | LWRS | STIS E140M | STIS E230M | – |
| AzV 456 | Sk 143 | O9.5 Iab | LWRS | COS G130M+G160M | STIS E230M | – |
| AzV 327 | R 28, BLOeM 1-066 | O9.7 Ib | LWRS | STIS E140M | – | MIKE |
| AzV 235 | R 17, Sk 82, BLOeM 7-064 | B0 Ia | LWRS | STIS E140M | STIS E230M | – |
| AzV 215 | Sk 76 | B0 Ia | LWRS | STIS E140M | STIS E230M | – |
| AzV 104 | – | B0.5 Ia | LWRS | STIS E140M | STIS E230M | MIKE |
| AzV 410 | – | B0.7 Iab | – | STIS E140M | – | – |
| AzV 242 | R 18, Sk 85, BLOeM 4-078 | B0.7 Ia | LWRS | STIS E140M | STIS E230M | - |
| AzV 96 | Sk 46, BLOeM 8-008 | B1 Iab | LWRS | STIS E140M | STIS E230M | MIKE |
| AzV 264 | Sk 94, BLOeM 1-009 | B1 Ia | LWRS | STIS E140M | STIS E230M | MIKE |
| AzV 175 | Sk 64 | B1.5 Ib | LWRS | COS G130M+G160M | - | MIKE |
| Sk 191 | – | B1.5 Ia | LWRS | STIS E140M | STIS E230M | – |
| AzV 18 | Sk 13 | B2 Ia | LWRS | STIS E140M | STIS E230M | MIKE |
| NGC330 ELS 4 | Rob B37 | B2.5 Ib | – | STIS E140M | STIS E230M | MIKE |
| AzV 187 | Sk 68 | B2.5 Ia | LWRS | COS G130M+G160M | STIS E230M | MIKE |
| AzV 22 | 2dFS 5015 | B3 Ia | – | STIS E140M | STIS E230M | – |
| AzV 393 | R 39, Sk 124 | B3 Ia+ | LWRS | COS G130M+G160M | STIS E230M | MIKE |
| AzV 343 | Sk 111 | B8 Iab | – | COS G130M+G160M | STIS E230M | MIKE |
| AzV 324 | BLOeM 1-062 | B8 Ib | – | COS G130M+G160M | STIS E230M | – |
Notes. The spectral types are based on XShootU observations (Bestenlehner et al. 2025).
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