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Table A.1

Current evolutionary masses for the sample stars, derived from the classical (M1) and the spectroscopic (M2) HRDs.

Object ST Bonn tracks Geneva tracks Notes
M1 M2 M1 M2
HD 64568a O3 V 68.2 82 ± 20.5 68.0 74.8
             
HD 46223 O4 V 47.0 51.8 47.3 46.5
             
HD 93843a O5 III 58.8 52.8 43.6 38.9 SB1?
             
CD−47 4551 O5 If 88 (ul) 53.4 66.2 34.2 SB2
             
HD 93204a O5.5 V 48.0 41.4 39.3 38.5
             
CPD−59 2600a O6 V 36.7 35.4 36.1 35.0 SB1
             
HD 91572a O6.5 V 34.0 34.6 32.8 32.8 SB1
             
HD 63005a O6.5 IV 38.9 42.2 34.2 34.2
             
HD 91824a O7 V 35.1 36.1 33.9 34.2 SB1
             
CPD−58 2620a O7 V 28.1 32.9 27.7 31.8
             
HD 93222 O7 V 33.8 33.2 32.2 31.5
             
HD 94963a O7 II 35.5 49.4 30.8 32.4 SB2?
             
HD 94963b 41.0 49.5 32.2 32.4
             
HD 94370a O7 32.4 33.9 29.9 29.8 SB2?
             
HD 94370b 36.2 34.1 31.0 29.9
             
HD 151804 O8 Iaf 56.9 52.0 38.1 31.0 SB2
             
HD 92504 O8.5 V 24.0 26.0 23.9 25.2
             
HD 75211 O8.5 II 37.3 38.0 31.8 29.1 SB1
             
HD 152249 OC9 Iab 36.8 51.5 29.5 30.9
             
HD 46202 O9.2 V 22.0 21.9 21.8 21.6
             
CD−44 4865 O9.7 III 26.9 28.3 24.5 24.6
             
HD 152003 O9.7 Iab 39.6 49.9 30.8 30.8
             
HD 75222 O9.7 Iab 35.4 47.4 28.6 29.5 SB?
             
HD 75222a 39.8 47.4 30.8 29.5
             
HD 78344 O9.7 Iab 39.8 46.7 30.8 29.4

HD 169582 O6 Iaf 82 (ul) 58.6 48.7 40.2
CD−43 4690 O6.5 III 39.9 45.3 32.1 32.4
HD 97848 O8 V 26.5 28.9 25.8 28.0
HD 69464 O7 Ib 48.4 49.7 36.8 32.4
HD 302505 O8.5 III 33.2 33.6 28.7 27.8
HD 148546 O9 Iab 41.4 47.5 31.1 29.8
HD 76968a O9.2 Ib 36.2 43.1 29.2 30.2 SB1
HD 69106 O9.7 II 22.0 22.4 21.8 21.8

Notes. Cluster and association members are listed in the upper part, field stars in the lower part. Errors shown in italics are not derived but adopted values. “ul” means upper limit. For more information, see Sect. 5.2.

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