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Table 7.
Spectral types and physical properties of the O, B, and A stars in the NGC 6357 KMOS sample.
| ID | X-ray ID (CXOU J) | Other ID | Previous ST | ST this work | AK (mag) | Teff (K) | log L/L⊙ |
|---|---|---|---|---|---|---|---|
| Previously classified OB stars in NGC6357 included in our KMOS sample | |||||||
| 16 | 172436.03−341400.4 | Pis 24 10 | O9V (a) | O9−B0 | 0.62 ± 0.01 | 32 000 ± 500 | 4.73 ± 0.02 |
| O0 | 172442.26−341141.1 | Pis 24 12 | B1V (a) | B1−B2 | 0.46 ± 0.02 | 23 300 ± 2700 | 3.87 ± 0.17 |
| O1 | 172443.29−341142.1 | Pis 24 18 | B0.5V (a) | O9−B1 | 0.74 ± 0.01 | 29 250 ± 3250 | 4.59 ± 0.13 |
| O2 | 172443.68−341140.7 | Pis 24 19 | B1V (a) | B1−B2 | 0.93 ± 0.02 | 23 300 ± 2700 | 4.12 ± 0.17 |
| Candidate OB stars in NGC6357 included in our KMOS sample | |||||||
| B0 | 172434.78−341318.0 | − | − | O9.5−B1V | 0.66 ± 0.01 | 29 000 ± 3000 | 4.22 ± 0.11 |
| B1 | 172440.49−341206.3 | − | − | O9.5−B2V | 0.66 ± 0.03 | 26 300 ± 5700 | 4.31 ± 0.29 |
| B2 | 172442.87−340911.6 | − | − | O9.5−B1V | 1.03 ± 0.01 | 29 000 ± 3000 | 4.59 ± 0.11 |
| B3 | 172447.56−341048.6 | − | − | K1−K5V | 1.07 ± 0.03 | 4790 ± 380 | 1.93 ± 0.1 |
| B4 | 172455.08−341111.5 | − | − | O9.5−B1V | 0.88 ± 0.01 | 29 000 ± 3000 | 4.67 ± 0.11 |
| B6 | 172528.51−342652.5 | − | − | O9.5−B1V | 0.55 ± 0.01 | 29 000 ± 3000 | 4.23 ± 0.11 |
| B7 | 172547.33−342154.1 | − | − | B2−B5V | 0.55 ± 0.02 | 18 150 ± 2450 | 3.52 ± 0.19 |
| B8 | 172554.16−342156.4 | − | − | B0−B3V | 0.68 ± 0.04 | 24 250 ± 7250 | 3.88 ± 0.4 |
| B9 | 172557.29−341850.8 | − | − | O9−B3V | 0.85 ± 0.05 | 24 750 ± 7750 | 4.3 ± 0.42 |
| B10 | 172558.08−341606.1 | − | − | O7−O9V | 0.77 ± 0.01 | 34 500 ± 2000 | 4.4 ± 0.04 |
| B11 | 172558.15−342119.2 | − | − | O9−B1 | 0.92 ± 0.01 | 29 250 ± 3250 | 4.61 ± 0.13 |
| B12 | 172602.07−341757.6 | − | − | − | − | − | − |
| B13 | 172604.04−341520.0 | − | − | O6−O8V | 1.0 ± 0.01 | 36 750 ± 2250 | 4.99 ± 0.06 |
| B16 | 172604.25−341557.0 | − | − | − | − | − | − |
| B14 | 172604.71−341526.3 | − | − | F2−F6V | 1.43 ± 0.01 | 6575 ± 235 | 2.66 ± 0.05 |
| B15 | 172604.72−341611.2 | − | − | O9.5−B1V | 1.03 ± 0.01 | 29 000 ± 3000 | 4.22 ± 0.11 |
| 118 | 172601.88−341631.1 | − | − | B0−B3 | 0.75 ± 0.04 | 24 250 ± 7250 | 4.26 ± 0.4 |
| New OB and A stars in NGC 6357 | |||||||
| 14 | 172434.67−341425.2 | − | − | A5−F3IV-V | 0.25 ± 0.01 | 7400 ± 680 | 1.65 ± 0.12 |
| 22 | 172439.41−341526.8 | − | − | B1−B2 | 0.61 ± 0.02 | 23 300 ± 2700 | 3.84 ± 0.17 |
| 34 | 172444.62−341100.6 | − | − | A9−F3V | 0.53 ± 0.01 | 7080 ± 360 | 1.98 ± 0.06 |
| 45 | 172451.14−341201.0 | − | − | A9−F3V | 0.51 ± 0.01 | 7080 ± 360 | 1.8 ± 0.06 |
| 65 | 172522.78−342404.6 | − | − | A5−F5III-IV | 0.39 ± 0.01 | 9477 ± 3222 | 2.34 ± 0.29 |
| 70 | 172530.30−342455.1 | − | − | A8−F2III | 0.44 ± 0.01 | 8055 ± 1251 | 2.76 ± 0.12 |
| 71 | 172532.29−342346.5 | − | − | A0−F2III-IV | 0.57 ± 0.05 | 12 579 ± 5775 | 2.68 ± 0.37 |
| 73 | 172533.82−342708.5 | − | − | B0−B2V | 1.02 ± 0.03 | 26 050 ± 5450 | 4.1 ± 0.28 |
| 88 | 172545.29−342535.2 | − | − | O9.5−B1V | 0.59 ± 0.01 | 29 000 ± 3000 | 4.34 ± 0.11 |
| 107 | 172556.17−341510.4 | − | − | B4−B6V | 0.4 ± 0.01 | 15 600 ± 1100 | 2.92 ± 0.1 |
| 108 | 172556.81−341727.0 | − | − | A8−F2V | 0.73 ± 0.01 | 7155 ± 345 | 2.11 ± 0.06 |
| 112 | 172559.18−341919.4 | − | − | B0−B2V | 0.76 ± 0.03 | 26 050 ± 5450 | 4.03 ± 0.28 |
| Previously classified OB stars in NGC 6357 not included in our KMOS sample | |||||||
| − | 172428.95−341450.6 | Pis 24 15 | O7.5Vz (b) | − | − | 35 000 | 4.93 |
| − | 172442.30−341321.4 | Pis 24 3 | O8V (a) | − | − | 35 000 | 4.96 |
| − | 172443.28−341243.9 | Pis 24 2 | O5.5V((f)) (a) | − | − | 40 000 | 5.37 |
| − | 172443.49−341156.9 | Pis 24 1 SW+NEab | O4III(f+)+O3.5If* (c) | − | − | 42000 | 6.22 |
| − | 172444.48−341158.8 | Pis 24 16 | O7.5V (a) | − | − | 36 000 | − |
| − | 172444.72−341202.6 | Pis 24 17 | O3.5III(f*) (a) | − | − | 44 500 | 5.92 |
| − | 172445.77−340939.8 | Pis 24 13 | O6.5V((f)) (a) | − | − | 38 000 | 5.25 |
| − | 172508.85−341112.4 | HD 157504 | WC6+O7/9 (a) | − | − | 37 000 | − |
| − | 172529.16−342515.6 | [N78] 51 | O6Vn((f)) (b) | − | − | 41 000 | 5.35 |
| − | 172534.23−342311.7 | [N78] 49 | O5.5IV(f) (b) | − | − | 39 000 | 5.87 |
| − | 172538.60−340843.5 | LS 4151 | O6/7III (a) | − | − | 38 000 | 5.41 |
| − | 172626.45−341700.9 | HD 319788 | B2III: (a) | − | − | 21 000 | 4.22 |
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