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Table 2:

Derived stellar properties of the ionizing stars of RCW 79, RCW 82 and RCW 120.

Source 		ST $T_{{\rm eff}}$ $\log \frac{L}{L_{\odot}}$ $M_{\rm evol}$ log(Q0) log(L0)
    [kK]   [$M_{\odot }$]    
RCW79 2 O7.5-8V/III 36 $\pm $ 2 4.95 $\pm $ 0.22 $26.2^{\rm +6.1}_{-4.8}$ 48.45 $\pm $ 0.23 37.90 $\pm $ 0.23
RCW79 4a O4-6V/III 40 $\pm $ 2 5.56 $\pm $ 0.22 $46.1^{\rm +13.3}_{-12.7}$ 49.25 $\pm $ 0.23 38.74 $\pm $ 0.23
RCW79 5a O4-6V/III 40 $\pm $ 2 5.56 $\pm $ 0.22 $46.1^{\rm +13.3}_{-12.7}$ 49.25 $\pm $ 0.23 38.74 $\pm $ 0.23
RCW79 6a O6-8V/III 38 $\pm $ 2 5.33 $\pm $ 0.22 $36.2^{\rm +7.2}_{-6.2}$ 48.91 $\pm $ 0.23 38.40 $\pm $ 0.23
RCW79 6b O9-B2V 28 $\pm $ 4 4.15 $\pm $ 0.27 $13.2^{\rm +3.5}_{-3.8}$ 47.00 $\pm $ 0.31 36.42 $\pm $ 0.31
RCW79 7 O6-8V/III 37 $\pm $ 2 5.30 $\pm $ 0.22 $35.1^{\rm +6.4}_{-7.3}$ 48.80 $\pm $ 0.23 38.28 $\pm $ 0.23
RCW79 8a O9-B2V/III 30 $\pm $ 3 4.76 $\pm $ 0.24 $19.2^{\rm +5.0}_{-3.7}$ 47.33 $\pm $ 0.26 36.75 $\pm $ 0.26
RCW79 8b O9-B2V/III 30 $\pm $ 3 4.67 $\pm $ 0.24 $18.6^{\rm +4.6}_{-4.2}$ 46.75 $\pm $ 0.26 36.16 $\pm $ 0.26
RCW79 9a O9-B2V/III 30 $\pm $ 3 4.57 $\pm $ 0.24 $17.7^{\rm +4.3}_{-4.4}$ 47.95 $\pm $ 0.26 37.38 $\pm $ 0.26
RCW79 9b O9-B2V/III 30 $\pm $ 3 4.53 $\pm $ 0.24 $17.3^{\rm +4.1}_{-4.5}$ 48.52 $\pm $ 0.26 37.99 $\pm $ 0.26
RCW79 10 O6.5-8V/III 38 $\pm $ 2 5.26 $\pm $ 0.21 $34.5^{\rm +6.8}_{-5.9}$ 48.96 $\pm $ 0.22 38.45 $\pm $ 0.22
RCW79 12b O9-B2V/III 28 $\pm $ 4 4.21 $\pm $ 0.27 $13.6^{\rm +3.7}_{-3.8}$ 47.06 $\pm $ 0.31 36.48 $\pm $ 0.31
CHII #6 O7.5-9.5V/III 37.5 $\pm $ 2 5.25 $\pm $ 0.22 $34.1^{\rm +6.6}_{-6.8}$ 48.79 $\pm $ 0.23 38.26 $\pm $ 0.23
RCW82 e2 O9-B2V/III 34 $\pm $ 2 4.95 $\pm $ 0.27 $24.1^{\rm +6.5}_{-5.0}$ 48.37 $\pm $ 0.28 37.81 $\pm $ 0.28
RCW82 e3 O9-B2V/III 35 $\pm $ 2 5.07 $\pm $ 0.27 $27.5^{\rm +8.5}_{-5.8}$ 48.59 $\pm $ 0.28 38.05 $\pm $ 0.28
RCW120 e O6-8V/III 37.5 $\pm $ 2 5.07 $\pm $ 0.21 $29.9^{\rm +5.9}_{-6.8}$ 48.58 $\pm $ 0.22 38.05 $\pm $ 0.22

Notes. The columns are: target name, spectral type, effective temperature, luminosity, evolutionary mass, ionizing flux, ionizing luminosity.
The errors on the last two parameters only take into account the uncertainties on $T_{{\rm eff}}$ and $\log \frac{L}{L_{\odot}}$.


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