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Table D.1

Spectroscopic and fundamental parameters for the calibrator sample curated in this work.

ID SpC SB status #sp. v sin i [km s-1] Teff [kK] log gtrue [dex] Gcorr [mag] AV [mag] dALS [pc] MV [mag] R [R] log( L/L) [dex] Msp [M] BCV [mag] FW3414 [Å]
ALS12619 O7V((f))z C 1 20 38.3 ± 0.8 4.08 ± 0.16 10.496 2.35 ± 0.08 2670 ± 140 -3.92 ± 0.15 6.3 ± 0.4 4.89 ± 0.07 17.4 ± 6.4 -3.56 ± 0.23 5.8
ALS4880 O6V((f)) C 1 84 39.2 ± 1.2 3.91 ± 0.18 10.073 3.84 ± 0.08 1750 ± 110 -4.58 ± 0.17 8.5 ± 0.7 5.19 ± 0.09 20.9 ± 9.1 -3.66 ± 0.28 4.9
ALS5039 ON6V((f))z C 7 123 41.2 ± 0.6 4.22 ± 0.04 10.804 3.98 ± 0.03 1955 ± 94 -4.22 ± 0.11 6.9 ± 0.4 5.09 ± 0.05 28.9 ± 3.9 -3.76 ± 0.17 5.4
BD+331025 O7.5V(n)z C 1 177 38.6 ± 1.7 4.21 ± 0.29 10.209 1.8 ± 0.03 2590 ± 240 -3.56 ± 0.2 5.3 ± 0.5 4.74 ± 0.11 17.0 ± 11.0 -3.55 ± 0.34 6.0
BD+364063 ON9.7Ib SB1 6 116 27.5 ± 1.1 3.03 ± 0.13 9.143 4.26 ± 0.03 1728 ± 72 -5.74 ± 0.1 18.6 ± 0.8 5.25 ± 0.08 13.8 ± 4.4 -2.64 ± 0.22 2.0
BD+364145 O8.5V(n) C 8 203 35.3 ± 1.3 3.74 ± 0.19 8.733 2.63 ± 0.03 1440 ± 65 -4.5 ± 0.1 8.8 ± 0.4 5.03 ± 0.07 15.8 ± 6.4 -3.34 ± 0.2 5.2
BD+56594 O7Vz C 3 26 38.3 ± 0.7 3.98 ± 0.12 9.637 1.83 ± 0.04 2420 ± 160 -3.96 ± 0.15 6.5 ± 0.5 4.91 ± 0.07 14.6 ± 4.5 -3.58 ± 0.23 5.7
BD+60134 O5.5V(n)((f)) C 4 249 41.3 ± 1.7 4.03 ± 0.19 10.402 2.72 ± 0.03 2710 ± 150 -4.3 ± 0.12 7.3 ± 0.4 5.14 ± 0.09 20.6 ± 8.6 -3.81 ± 0.25 5.7
BD+60261 O7.5III(n)((f)) C 3 161 35.0 ± 0.4 3.53 ± 0.05 8.585 1.8 ± 0.04 2570 ± 250 -5.22 ± 0.21 12.4 ± 1.2 5.31 ± 0.09 19.0 ± 4.2 -3.31 ± 0.31 5.0
BD+602635 O6V((f)) C 5 50 39.7 ± 0.9 3.77 ± 0.1 10.018 2.29 ± 0.04 2820 ± 180 -4.42 ± 0.13 7.8 ± 0.5 5.13 ± 0.07 13.3 ± 3.4 -3.66 ± 0.22 3.9
BD+60499 O9.5V C 1 17 34.6 ± 0.9 3.97 ± 0.18 10.135 2.48 ± 0.06 1976 ± 85 -3.68 ± 0.12 6.0 ± 0.3 4.67 ± 0.06 12.4 ± 5.2 -3.26 ± 0.19 6.6
...
HD96622 O9.2IV SB1 4 39 32.8 ± 0.7 3.64 ± 0.11 8.828 1.43 ± 0.04 2180 ± 160 -4.21 ± 0.15 8.0 ± 0.6 4.82 ± 0.07 10.3 ± 2.9 -3.1 ± 0.23 5.6
HD96638 O8III C 1 249 33.7 ± 0.8 3.5 ± 0.08 8.463 1.73 ± 0.04 2350 ± 180 -5.02 ± 0.17 11.5 ± 0.9 5.19 ± 0.08 15.5 ± 3.4 -3.22 ± 0.26 5.1
HD96654 O9III C 2 112 33.2 ± 0.4 3.57 ± 0.07 8.479 1.42 ± 0.04 2520 ± 290 -4.87 ± 0.25 10.9 ± 1.3 5.11 ± 0.1 16.1 ± 4.3 -3.16 ± 0.35 6.1
HD96715 O4V((f))z C 2 59 45.0 ± 2.1 3.86 ± 0.16 8.188 1.33 ± 0.03 2590 ± 300 -5.13 ± 0.25 10.2 ± 1.2 5.58 ± 0.13 28.0 ± 12.0 -4.08 ± 0.41 4.1
HD96917 O8Ib(n)(f) C 4 165 32.0 ± 0.2 3.25 ± 0.05 7.016 1.16 ± 0.04 2680 ± 470 -6.22 ± 0.4 21.1 ± 3.9 5.62 ± 0.16 29.0 ± 10.0 -3.09 ± 0.57 3.3
HD96946 O6.5III(f) C 5 71 38.8 ± 0.7 3.84 ± 0.11 8.384 1.58 ± 0.04 2660 ± 430 -5.25 ± 0.35 11.7 ± 1.9 5.44 ± 0.14 35.0 ± 14.0 -3.61 ± 0.49 4.3
HD97253 O5III(f) C 4 70 39.2 ± 0.4 3.62 ± 0.05 7.034 1.41 ± 0.03 2420 ± 430 -6.21 ± 0.37 18.4 ± 3.1 5.85 ± 0.15 52.0 ± 18.0 -3.68 ± 0.53 3.5
HD97319 O7.5IV((f)) C 1 51 35.6 ± 0.7 3.61 ± 0.1 8.475 1.59 ± 0.06 2700 ± 330 -5.22 ± 0.27 12.1 ± 1.5 5.33 ± 0.11 22.0 ± 7.4 -3.36 ± 0.39 4.4
HD97434 O7.5III(n)((f)) C 3 217 34.9 ± 0.4 3.56 ± 0.04 8.036 1.43 ± 0.03 2480 ± 330 -5.34 ± 0.28 13.1 ± 1.7 5.36 ± 0.11 22.5 ± 5.6 -3.32 ± 0.39 5.2
HD97848 O8V C 2 41 35.6 ± 0.7 3.66 ± 0.08 8.618 1.0 ± 0.04 2660 ± 480 -4.42 ± 0.4 8.4 ± 1.5 5.0 ± 0.16 11.7 ± 4.6 -3.34 ± 0.57 5.1
HD99897 O6.5IV((f)) C 1 50 37.6 ± 0.6 3.56 ± 0.06 8.261 1.56 ± 0.04 2260 ± 220 -4.97 ± 0.22 10.5 ± 1.1 5.3 ± 0.09 14.8 ± 3.5 -3.54 ± 0.31 3.8

SB status: C:Constant star, LPV:Line profile variability, SB1:Single-lined spectroscopic binary. Classifications based on fewer than three spectra (as indicated in the #sp. column) should be treated with caution. Notes: star ID; spectral classification (SpC) from the ALS catalog; spectroscopic binarity status (SB), following the methodology of Holgado (2019) and Martínez-Sebastián et al. (2025); number of spectra available; projected rotational velocity (ν sin i) derived with the IACOB-BROAD tool assuming a 10% uncertainty; effective temperature (Teff) and rotationally corrected surface gravity (log gtrue), obtained from the IACOB-GBAT/FASTWIND analysis; corrected Gaia G-band magnitude (Gcorr) following Maíz Apellániz & Weiler (2018), with average error of 0.003; visual extinction in V band; and distance from the ALS catalog (dALS). The remaining parameters were computed following the methodology described in Sects. 3 and 4.4. BCV refers to the bolometric correction derived from the stellar luminosity, and FW3414 represents the difference between the width of the Hβ measured at three-quarters and one-quarter of its line depth, with global uncertainty of 0.1 Å. The full table is available at the CDS.

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