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Table 7
Physical parameters of spectroscopically classified O and B stars, assuming DM = 10.8.
| Object | Sp. type | A V | T eff | M V | M (M⊙) | Age (Myr) |
|
|
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| Cygnus OB2 | ||||||
| Known stars | ||||||
| BD+40 4179 | O8V: | 2.2 | 34877 | –3.63 | 19.8 | 0.2 |
| BD+40 4185 | B0V: | 2.4 | 30110 | –4.11 | 17.7 | 6.3 |
| HD 195213 | O7 | 3.6 | 36872 | –5.81 | 43.3 | 2.8 |
| J20323033+4034332 | O9.5IV | 6.1 | 31382 | –5.24 | 26.1 | 4.9 |
| J20314605+4043246 | B0.5IV | 4.7 | 25917 | –3.80 | 14.1 | 10.0 |
| J20310019+4049497 | O7V((f)) | 4.5 | 36872 | –4.34 | 25.6 | 2.0 |
| J20305552+4109575 | B0V | 5.5 | 30110 | –3.77 | 16.5 | 5.6 |
| J20323843+4040445 | O8III | 6.9 | 33961 | –5.04 | 28.0 | 3.9 |
| J20294666+4105083 | B0.5V(n) sb2? | 4.3 | 28032 | –3.61 | 14.4 | 7.9 |
| J20295701+4109538 | B0V | 4.9 | 30110 | –3.72 | 16.3 | 5.6 |
| J20333821+4041064 | B0Ia | 7.6 | 25094 | –6.60 | 36.0 | 4.5 |
| J20313690+4059092 | O7Ib(f) | 7.7 | 34990 | –5.70 | 36.0 | 3.5 |
| J20330292+4047254 | O8II((f)) | 7.0 | 33570 | –6.15 | 43.9 | 3.2 |
| J20323498+4052390 | B0.2V | 5.8 | 29279 | –3.66 | 15.5 | 6.3 |
| J20303970+4108489 | B0.7Ib | 6.2 | 21514 | –6.11 | 23.0 | 6.9 |
| J20322734+4055184 | B2V | 5.1 | 22608 | –4.15 | 12.1 | 15.5 |
| V1827 Cyg | Ofpe | 8.2 | 38612 | –6.13 | 57.0 | 2.2 |
| J20323486+4056174 | O8V | 6.0 | 34877 | –3.75 | 20.4 | 0.8 |
| J20305772+4109575 | O9.5V | 6.5 | 31884 | –4.16 | 19.4 | 4.9 |
| J20345606+4038179 | O9.7Iab | 6.3 | 28315 | –5.73 | 29.1 | 4.9 |
| J20312210+4112029 | B2V | 5.2 | 22608 | –3.42 | 11.1 | 15.5 |
| J20300788+4123504 | O8V | 7.3 | 34877 | –4.09 | 21.9 | 2.2 |
| VI Cyg 3 | O9: | 5.6 | 32882 | –6.52 | 53.3 | 2.8 |
| J20305111+4120218 | B0V | 6.3 | 30110 | –3.44 | 15.4 | 4.5 |
| J20344471+4051465 | B0Ia | 6.4 | 25094 | –6.48 | 36.0 | 4.5 |
| J20344410+4051584 | O6.5III(f) | 6.9 | 37134 | –4.98 | 31.3 | 2.8 |
| J20311833+4121216 | O9V | 6.3 | 32882 | –4.60 | 23.0 | 4.5 |
| J20314540+4118267 | O8I | 6.0 | 33179 | –5.04 | 26.0 | 4.5 |
| J20323154+4114082 | O7.5Ib-II(f) | 8.0 | 34084 | –5.86 | 37.0 | 3.5 |
| J20320689+4117570 | B3V | 5.5 | 19262 | –3.19 | 8.6 | 27.5 |
| J20313338+4122490 | B1V | 5.5 | 25953 | –3.22 | 12.3 | 10.0 |
| J20332346+4109130 | O5.5V | 7.0 | 39865 | –6.40 | 68.6 | 2.0 |
| J20340486+4105129 | O9V | 5.5 | 32882 | –3.42 | 17.4 | 0.8 |
| J20330879+4113179 | O4III | 6.4 | 42422 | –6.17 | 62.3 | 1.5 |
| J20332674+4110595 | O8.5V | 6.0 | 33879 | –4.14 | 21.2 | 3.2 |
| J20331369+4113057 | O8V | 5.7 | 34877 | –4.00 | 21.4 | 2.0 |
| J20325964+4115146 | B0V | 6.3 | 30110 | –4.19 | 18.1 | 6.3 |
| J20331326+4113287 | O6V | 7.0 | 38867 | –4.43 | 29.8 | 1.0 |
| VI Cyg 9 | O5If | 6.5 | 38612 | –6.82 | 83.6 | 2.0 |
| VI Cyg 1 | O9V | 4.8 | 32882 | –4.81 | 24.5 | 4.5 |
| J20340435+4108078 | B1V | 5.5 | 25953 | –3.26 | 12.5 | 10.0 |
| J20340601+4108090 | O9.5V | 6.5 | 31884 | –4.20 | 19.6 | 4.9 |
| J20303980+4136506 | O6V | 5.9 | 38867 | –4.00 | 26.3 | 0.0 |
| VI Cyg 2 | B1Ib: | 3.2 | 19979 | –4.08 | 11.3 | 17.8 |
| J20330292+4117431 | O8V | 6.2 | 34877 | –4.46 | 24.0 | 3.2 |
| J20314965+4128265 | O9III | 3.8 | 31846 | –3.42 | 16.7 | 2.0 |
| J20331748+4117093 | O7V | 5.4 | 36872 | –4.61 | 28.1 | 2.5 |
| LS III +41 30 | O9V | 4.3 | 32882 | –3.94 | 19.3 | 3.5 |
| J20333078+4115226 | B1I | 6.1 | 19979 | –6.49 | 25.8 | 6.3 |
| J20332101+4117401 | O9V | 4.9 | 32882 | –3.52 | 17.8 | 1.4 |
| VI Cyg 4 | O7IIIf | 4.0 | 36077 | –5.00 | 30.9 | 3.2 |
| VI Cyg 8C | O5III | 4.7 | 40307 | –5.62 | 47.6 | 2.0 |
| VI Cyg 8D | O8.5V | 4.8 | 33879 | –3.94 | 20.3 | 2.5 |
| J20333700+4116113 | B0V | 5.4 | 30110 | –4.30 | 18.7 | 6.3 |
| J20360451+4056129 | O5V((f)) | 6.4 | 40862 | –4.72 | 34.8 | 1.0 |
| VI Cyg 16 | O8V(n) | 4.0 | 34877 | –4.38 | 23.5 | 3.2 |
| VI Cyg 7 | O3If | 5.0 | 42233 | –5.63 | 48.3 | 1.5 |
| J20325002+4123446 | O8V | 4.7 | 34877 | –4.19 | 22.5 | 2.5 |
| VI Cyg 23 | O9V | 4.8 | 32882 | –3.46 | 17.6 | 1.0 |
| VI Cyg 6 | O8V | 4.4 | 34877 | –4.71 | 26.0 | 3.5 |
| V2186 Cyg | B0V | 4.7 | 30110 | –3.26 | 14.9 | 3.5 |
| J20331803+4121366 | O8V | 4.9 | 34877 | –4.08 | 21.9 | 2.2 |
| J20325919+4124254 | O8V | 4.6 | 34877 | –3.84 | 20.8 | 1.2 |
| LS III +41 32 | B0Ib | 3.3 | 25094 | –3.10 | 11.6 | 11.2 |
| J20333910+4119258 | B0Iab | 5.2 | 25094 | –5.59 | 22.9 | 6.9 |
| J20335952+4117354 | O9.5V | 5.0 | 31884 | –4.30 | 20.1 | 4.9 |
| J20334783+4120415 | B1III | 5.2 | 21353 | –4.77 | 14.1 | 12.3 |
| J20342193+4117016 | O8III + O8III | 5.9 | 33961 | –4.70 | 24.8 | 3.9 |
| J20334086+4130189 | O7V | 5.1 | 36872 | –3.61 | 21.4 | 0.0 |
| VI Cyg 10 | O9.5Ia | 5.4 | 30463 | –6.64 | 49.4 | 3.2 |
| J20333030+4135578 | O8V | 6.0 | 34877 | –4.75 | 26.0 | 3.5 |
| J20342959+4131455 | O7V | 6.2 | 36872 | –5.65 | 41.3 | 2.8 |
| J20341350+4135027 | O7V | 4.9 | 36872 | –4.29 | 25.4 | 1.8 |
| VI Cyg 11 | O5I | 5.1 | 38612 | –6.24 | 59.0 | 2.2 |
| J20345878+4136174 | B0 Ib(n) sb2? | 5.7 | 25094 | –5.78 | 24.7 | 6.3 |
| New stars | ||||||
| J20303833+4010538 | B1V | 5.7 | 25953 | –3.43 | 12.5 | 11.2 |
| J20293473+4020381 | B1V | 5.2 | 25953 | –3.55 | 12.8 | 11.2 |
| J20273982+4040384 | B1V | 3.0 | 25953 | –3.30 | 12.5 | 10.0 |
| J20281539+4044046 | B1III | 4.1 | 21353 | –4.22 | 12.1 | 15.5 |
| BD+40 4210 | B1III:e | 6.5 | 21353 | –7.66 | 54.1 | 3.5 |
| J20310700+4035537 | B1III | 4.7 | 21353 | –2.98 | 9.5 | 20.0 |
| J20292449+4052599 | B0.2IV | 5.7 | 27274 | –4.14 | 15.6 | 8.7 |
| J20303297+4044024 | B1V | 4.0 | 25953 | –3.36 | 12.7 | 10.0 |
| J20282772+4104018 | B0.5V | 5.2 | 28032 | –3.53 | 14.2 | 7.9 |
| J20335842+4019411 | O9: | 7.3 | 32882 | –5.53 | 32.0 | 3.9 |
| J20314885+4038001 | B1II | 4.4 | 20666 | –2.97 | 9.1 | 21.9 |
| J20283039+4105290 | OC9.7Ia | 6.7 | 28315 | –6.20 | 34.2 | 4.5 |
| J20272428+4115458 | O9.5V | 4.4 | 31884 | –3.29 | 16.3 | 1.1 |
| J20301839+4053466 | O9V | 6.9 | 32882 | –4.45 | 21.9 | 4.5 |
| J20284657+4107069 | B2II | 5.4 | 17804 | –3.00 | 8.1 | 31.6 |
| J20321568+4046170 | B0.2IV | 5.5 | 27274 | –3.34 | 13.4 | 7.9 |
| J20294060+4109585 | B1[e] | 4.5 | 25953 | –3.26 | 12.5 | 10.0 |
| J20331130+4042337 | B0:III: | 6.6 | 26248 | –4.16 | 15.9 | 8.7 |
| J20323951+4052475 | B0:V: | 6.1 | 30110 | –4.31 | 18.8 | 6.3 |
| J20293480+4120089 | O9.5V | 6.9 | 31884 | –3.92 | 18.4 | 4.5 |
| BD+40 4223 | B0Ia | 6.0 | 25094 | –7.00 | 48.3 | 3.5 |
| J20333822+4053412 | B0Ib | 5.5 | 25094 | –4.87 | 16.9 | 10.0 |
| J20331870+4059379 | B0.5IIIe | 7.0 | 23801 | –4.11 | 13.4 | 12.3 |
| J20315961+4114505 | O7V | 5.9 | 36872 | –3.99 | 23.6 | 0.6 |
| J20341605+4102196 | O9.5V | 6.5 | 31884 | –3.84 | 18.1 | 3.9 |
| J20354703+4053012 | B2V | 4.1 | 22608 | –2.95 | 9.8 | 17.8 |
| J20331748+4117093 | O7V | 5.4 | 36872 | –4.61 | 28.1 | 2.5 |
| Cygnus OB9 | ||||||
| Known stars | ||||||
| BD+38 4058 | B0V | 3.2 | 30110 | –4.21 | 18.2 | 6.3 |
| HD 228821 | B8 | –0.1 | 11800 | –2.10 | 8.2 | 31.6 |
| HD 228929 | B0.5Ib | 4.1 | 22537 | –5.60 | 20.5 | 7.9 |
| HD 193426 | B9Ia | 3.5 | 10500 | –6.71 | 15.4 | 11.2 |
| HD 229250 | O7 | 3.9 | 36872 | –5.28 | 33.9 | 3.2 |
| BD+39 4168 | O7 | 4.6 | 36872 | –5.40 | 37.3 | 2.8 |
| HD 228919 | B1IV | 1.9 | 23653 | –3.54 | 11.8 | 14.1 |
| HD 228882 | B05Ia | 4.0 | 22537 | –5.90 | 23.0 | 6.9 |
| HD 228928 | B2Ib:nn | 2.9 | 17180 | –4.37 | 10.6 | 20.0 |
| HD 229202 | O8V: | 3.0 | 34877 | –4.66 | 25.0 | 3.5 |
| HD 228911 | B2 | 0.9 | 22608 | –3.79 | 11.6 | 15.5 |
| HD 228941 | B3 | 1.0 | 19262 | –3.39 | 9.1 | 25.1 |
| BD+39 4177 | O6.5 | 3.3 | 37870 | –5.51 | 39.3 | 2.8 |
| BD+39 4179 | B0III | 3.4 | 26248 | –3.26 | 12.5 | 10.0 |
| HD 194194 | B2III | –0.2 | 18428 | –3.07 | 8.1 | 31.6 |
| NGC 6910 #14 | B0.5V | 2.9 | 28032 | –3.77 | 15.1 | 7.9 |
| BD+40 4148 | O9.5:V | 3.4 | 31884 | –4.22 | 19.7 | 4.9 |
| BD+40 4146 | B3 | 2.8 | 19262 | –4.31 | 11.3 | 17.8 |
| NGC 6910 #16 | B3 | 2.9 | 19262 | –3.56 | 9.3 | 25.1 |
| HD 194092 | B0.5III | 0.5 | 23801 | –3.49 | 11.7 | 14.1 |
| BD+40 4159 | O9V | 3.9 | 32882 | –4.59 | 22.8 | 4.5 |
| HD 229196 | O5 | 3.8 | 40862 | –6.19 | 61.6 | 2.0 |
| J20240515+4046035 | B0.5V | 3.8 | 28032 | –3.86 | 15.4 | 7.9 |
| HD 193945 | B0Vnn | 2.2 | 30110 | –5.11 | 23.8 | 5.6 |
| New stars | ||||||
| J20221729+3934215 | B5Ia | 5.8 | 13400 | –4.16 | 8.2 | 31.6 |
| J20215115+3937515 | B3V | 3.1 | 19262 | –3.88 | 9.9 | 21.9 |
| J20241767+3920326 | B1V | 3.5 | 25953 | –3.23 | 12.3 | 10.0 |
| J20223944+3935420 | B1III | 3.1 | 21353 | –3.82 | 11.1 | 17.8 |
| J20234624+3937078 | B0.7IV | 3.2 | 25011 | –3.86 | 13.7 | 11.2 |
| J20243872+3930301 | B0I: | 6.5 | 25094 | –3.97 | 13.9 | 11.2 |
| J20183413+4025045 | B0.2IV | 4.6 | 27274 | –4.52 | 17.9 | 7.9 |
| J20215160+3959496 | B1Ib | 2.9 | 19979 | –2.81 | 8.5 | 25.1 |
| J20220879+3958161 | B1II | 3.8 | 20666 | –3.82 | 11.1 | 17.8 |
| J20214410+4012529 | B1Ia | 6.2 | 19979 | –5.91 | 20.5 | 7.9 |
| J20190610+4037004 | O9.7Iab | 5.1 | 28315 | –4.26 | 17.0 | 7.9 |
| J20211677+4023162 | B2III | 4.8 | 18428 | –3.14 | 8.1 | 31.6 |
| J20203933+4031176 | B1.5V | 4.4 | 24280 | –3.07 | 10.8 | 14.1 |
| J20204933+4033027 | B1.5V | 5.0 | 24280 | –3.25 | 11.2 | 14.1 |
| J20194916+4052090 | O9.5V | 4.8 | 31884 | –4.18 | 19.4 | 4.9 |
| J20214868+4043005 | B1V | 3.1 | 25953 | –3.40 | 12.9 | 10.0 |
| J20220454+4042487 | B1III | 3.3 | 21353 | –3.48 | 10.1 | 20.0 |
| J20250591+4020124 | B2III | 2.6 | 18428 | –2.66 | 7.8 | 31.6 |
| J20233375+4045199 | B1III | 3.4 | 21353 | –2.86 | 8.9 | 21.9 |
| J20215593+4110129 | B1III | 3.3 | 21353 | –2.85 | 8.9 | 21.9 |
| J20223777+4140292 | O5If | 5.2 | 38612 | –5.42 | 40.1 | 2.5 |
| Field | ||||||
| Known stars | ||||||
| BD+38 4098 | B9Ib | 1.9 | 10500 | –4.38 | 8.2 | 31.6 |
| BD+37 3976 | B1.5Vn | 2.2 | 24280 | –3.30 | 11.3 | 14.1 |
| BD+39 4189 | B2p?e? | 3.8 | 22608 | –5.30 | 18.6 | 8.7 |
| LSII+39 53 | O7V: | 3.6 | 36872 | –4.36 | 25.6 | 2.0 |
| HD 196489 | B3V | 0.5 | 19262 | –3.24 | 8.6 | 27.5 |
| HD 194779 | B3II | 0.4 | 15541 | –4.02 | 8.7 | 27.5 |
| HD 194839 | B0.5Iae | 3.7 | 22537 | –7.11 | 43.3 | 3.9 |
| BD+41 3762 | B2V | 3.3 | 22608 | –3.97 | 12.0 | 15.5 |
| J20310838+4202422 | O9.7II | 5.7 | 28644 | –5.19 | 22.5 | 6.3 |
| J20313693+4201218 | B0.7Ib | 4.8 | 21514 | –5.27 | 16.9 | 10.0 |
| BD+41 3794 | B0.2III | 3.8 | 25269 | –4.87 | 16.9 | 10.0 |
| J20342894+4156171 | O9V | 6.0 | 32882 | –4.11 | 20.1 | 3.9 |
| J20314215+4225532 | B1Ib | 7.5 | 19979 | –7.13 | 34.2 | 4.9 |
| LS III +42 17 | B1III | 3.7 | 21353 | –4.49 | 13.1 | 14.1 |
| J20382040+4156563 | B0II | 7.6 | 25671 | –5.67 | 24.3 | 6.3 |
| J20385918+4202395 | B0Ib | 5.4 | 25094 | –4.19 | 15.2 | 10.0 |
| BD+43 3654 | O4If | 5.1 | 40422 | –6.27 | 64.6 | 2.0 |
| BD+42 3835 | O9p... | 3.4 | 32882 | –5.09 | 27.0 | 4.5 |
| HD 199021 | B0V | 2.0 | 30110 | –4.86 | 22.7 | 5.6 |
| New stars | ||||||
| J20294195+3859342 | B0.2V | 4.7 | 29279 | –3.73 | 15.8 | 6.3 |
| J20301273+3904216 | B1V | 4.9 | 25953 | –3.21 | 12.3 | 10.0 |
| J20272553+3929246 | O9.5V | 4.6 | 31884 | –4.23 | 19.7 | 4.9 |
| J20313853+4152585 | B1.5V | 4.6 | 24280 | –3.05 | 10.8 | 14.1 |
| J20264025+4233221 | B2II | 3.3 | 17804 | –2.61 | 7.8 | 31.6 |
| BD+42 3760 | O8.5V | 3.2 | 33879 | –4.28 | 21.9 | 3.5 |
| J20312725+4304227 | B1.5V | 4.8 | 24280 | –3.70 | 12.7 | 12.3 |
| J20325571+4307583 | O9.5V | 4.9 | 31884 | –4.46 | 21.2 | 4.9 |
| J20374323+4232334 | B1III | 5.4 | 21353 | –3.10 | 9.7 | 20.0 |
| J20462289+4212311 | B3V | 4.0 | 19262 | –3.59 | 9.3 | 25.1 |
| J20452110+4223514 | B2V | 5.6 | 22608 | –3.15 | 10.2 | 17.8 |
| J20352227+4355305 | B0.2IV | 5.8 | 27274 | –4.61 | 18.1 | 7.9 |
| J20462826+4223417 | O9V | 5.4 | 32882 | –4.16 | 20.4 | 3.9 |
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