Table 2
Basic data of the confirmed massive new members (earlier than B3).
| Object | RA (hhmmss) | Dec (° ′ ′′ ) | Region | B | Ks | J | SpT | Binary star |
|---|---|---|---|---|---|---|---|---|
| J20423509+4256364 | 20 42 35.08 | +42 56 36.43 | c | 14.480 | 8.304 | 9.211 | O6IIIz | |
| J20371773+4156316 | 20 37 17.73 | +41 56 31.57 | c | 15.760 | 8.041 | 9.071 | O7V | |
| J20345785+4143543 | 20 34 57.84 | +41 43 54.25 | a | 15.430 | 7.417 | 8.447 | O7:Ib | |
| J20293563+4024315 | 20 29 35.63 | +40 24 31.45 | b | 12.468 | 8.268 | 8.831 | O8IIIz | |
| J20222481+4013426 | 20 22 24.81 | +40 13 42.55 | c | 13.620 | 8.410 | 9.034 | O8II | |
| J20261976+3951425 | 20 26 19.75 | +39 51 42.46 | c | 15.600 | 8.348 | 9.351 | O8.5IV | |
| J20275292+4144067 | 20 27 52.92 | +41 44 06.65 | b | 13.330 | 7.277 | 8.144 | O9.5II | |
| J20262484+4001413 | 20 26 24.84 | +40 01 41.25 | c | 13.290 | 8.330 | 9.021 | O9.2III | |
| J20291617+4057372 | 20 29 16.17 | +40 57 37.19 | b | 15.030 | 7.899 | 8.855 | O9.7III | |
| J20382173+4157069 | 20 38 21.72 | +41 57 06.89 | c | 15.810 | 7.682 | 8.760 | O9.7II | |
| J20181090+4029063 | 20 18 10.89 | +40 29 06.29 | c | 14.940 | 8.399 | 9.343 | O9.7Ib | yes* |
| J20273787+4115468 | 20 27 37.87 | +41 15 46.79 | b | 14.570 | 8.263 | 9.146 | B0II | |
| J20301097+4120088 | 20 30 10.97 | +41 20 08.82 | b | 15.690 | 8.882 | 9.855 | B0:II: | |
| J20323968+4050418 | 20 32 39.68 | +40 50 41.83 | a | 14.410 | 8.913 | 9.631 | B0II | |
| J20395358+4222506 | 20 39 53.58 | +42 22 50.62 | c | 15.890 | 5.822 | 7.345 | B0I | yes* |
| J20281176+3840227 | 20 28 11.75 | +38 40 22.73 | c | 11.805 | 7.944 | 8.349 | B0Ib | |
| J20323882+4058469 | 20 32 38.82 | +40 58 46.85 | a | 15.430 | 8.821 | 9.701 | B0Ib | |
| J20225451+4023314 | 20 22 54.50 | +40 23 31.39 | c | 13.107 | 8.601 | 9.175 | B0Iab | |
| J20253320+4048444 | 20 25 33.19 | +40 48 44.38 | c | 13.112 | 7.648 | 8.340 | B0Iab | |
| J20272099+4121262 | 20 27 20.99 | +41 21 26.15 | b | 13.830 | 8.730 | 9.448 | B0.5V | yes |
| HDE229258 | 20 24 25.51 | +39 49 28.30 | c | 10.235 | 8.689 | 8.833 | B0.7V | |
| J20330526+4143367 | 20 33 05.26 | +41 43 36.74 | a | 13.940 | 8.634 | 9.286 | B0.5III | |
| J20361806+4228483 | 20 36 18.06 | +42 28 48.30 | c | 15.650 | 8.855 | 9.814 | B0.7III | |
| J20233816+3938118 | 20 23 38.16 | +39 38 11.84 | c | 11.293 | 8.731 | 8.996 | B0.7Ib | |
| HD 228973 | 20 20 07.35 | +41 07 46.72 | c | 10.34 | 7.684 | 7.922 | B1V | yes |
| J20201435+4107155 | 20 20 14.34 | +41 07 15.45 | c | 12.412 | 8.240 | 8.627 | B1V | |
| J20230290+4133466 | 20 23 02.90 | +41 33 46.59 | c | 14.780 | 7.809 | 8.762 | B1V | |
| BD+404193 | 20 29 13.55 | +40 41 03.38 | b | 10.412 | 8.812 | 8.945 | B1V | |
| BD+404208 | 20 30 49.97 | +40 44 18.53 | b | 10.654 | 8.664 | 8.869 | B1V | |
| J20314341+4100021 | 20 31 43.40 | +41 00 02.07 | a | 15.940 | 8.957 | 9.885 | B1V | yes* |
| J20315898+4107314 | 20 31 58.98 | +41 07 31.41 | a | 15.490 | 8.832 | 9.773 | B1V | yes* |
| J20330453+3822269 | 20 33 04.53 | +38 22 26.91 | c | 11.383 | 8.790 | 9.021 | B1V | |
| J20230183+4014029 | 20 23 01.83 | +40 14 02.90 | c | 13.465 | 8.060 | 8.579 | B1III | |
| J20274925+4017004 | 20 27 49.25 | +40 17 00.42 | b | 13.460 | 8.104 | 8.713 | B1III | |
| J20315433+4010067 | 20 31 54.33 | +40 10 06.71 | b | 15.990 | 8.884 | 9.742 | B1III | |
| J20382889+4009566 | 20 38 28.88 | +40 09 56.63 | c | 9.996 | 8.816 | 8.896 | B1III | |
| J20440752+4107342 | 20 44 07.51 | +41 07 34.18 | c | 15.470 | 8.703 | 9.562 | B1III | |
| LSII+3797 | 20 33 35.52 | +38 01 36.73 | c | 11.838 | 5.900 | 6.691 | B1Ia | yes* |
| J20211924+3936230 | 20 21 19.24 | +39 36 22.98 | c | 12.732 | 7.886 | 8.488 | B1Ib | yes* |
| BD+394179 | 20 25 27.28 | +40 24 00.15 | c | 11.066 | 6.667 | 7.210 | B1Ib | |
| J20290247+4231159 | 20 29 02.46 | +42 31 15.91 | c | 13.330 | 8.426 | 9.090 | B1Ib | yes* |
| J20381289+4057169 | 20 38 12.88 | +40 57 16.86 | c | 12.870 | 8.675 | 9.183 | B2V | |
Notes. B magnitudes from the USNO-B catalog. Ks and J magnitudes from 2MASS catalog. Region a indicates the 1 deg. circular area centered on Cyg OB2#8 trapezium adopted by Wright et al. (2015) for the Cygnus OB2 association. Region b indicates the 1 deg. radius area adopted by Comerón& Pasquali (2012) for the same Cygnus OB2 association. Region c indicates the surrounding area outside the 1 deg. radius adopted by Comerón & Pasquali (2012). For binary stars asterisks indicate possible SB2 stars, whose spectral types are refered to the primary component.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.