Fig. 14

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X-ray luminosity compared to effective temperature. The thick diamonds with numbers represent the SMC targets AzV (or Sk for 179 and 191), while the circles with letters, in alphabetical order, represent the Galactic targets ε Ori (B0 Ia, Puebla et al. 2016), κ Ori (B0.5 Ia, Huenemoerder et al. 2011; Haucke et al. 2018), 9 Cep (B2 Ib), 55 Cyg (B2.5 Ia), o2 CMa (B3 Ia), and 64 Oph (B5 Ib/II, Bernini-Peron et al. 2023, as for the latter three). The colors of the circle and broad diamond symbols represent the wind terminal velocity. The purple thin diamonds represent the alternative values considering a TX = 0.5 MK for the corresponding early target connected by gray dashed lines. Likewise, the fuchsia crosses represent the alternative value for AzV 104 if considering a TX = 1.0 MK.
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