Table 3.
Stellar parameters for the hot companions to RSGs as determined by the HST/STIS Snapshot spectra.
| ID | F172M | E(B − V)Fita | Teff | R | log L/L⊙ | Age | Notes |
|---|---|---|---|---|---|---|---|
| [kK] | [R⊙] | [dex] | [Myr] | ||||
| SkKM 74 | 14.95 ± 0.04 | 0.08 | 25 ± 3 | 8.9 ± 0.5 | 4.4 ± 0.2 | 18.4 | – |
| SkKM 90 | 14.71 ± 0.02 | 0.08 | 18 ± 2 | 18.9 ± 0.9 | 4.4 ± 0.2 | 19.1 | – |
| SkKM 108 | 15.80 ± 0.03 | 0.08 | 27 ± 3 | 5.7 ± 0.2 | 4.1 ± 0.2 | 16.8 | Embedded |
| SkKM 113 | 15.95 ± 0.06 | 0.08 | 25 ± 3 | 6.1 ± 0.3 | 4.0 ± 0.2 | 22.1 | – |
| SkKM 171 | 18.73 ± 0.13 | 0.08 | 18 ± 2 | 3.5 ± 0.2 | 3.0 ± 0.2 | 88.0 | – |
| SkKM 209 | 16.92 ± 0.05 | 0.08 | 16 ± 2 | 7.8 ± 0.9 | 3.5 ± 0.3 | 67.9 | Embedded |
| SkKM 238 | 16.04 ± 0.04 | 0.08 | 27 ± 3 | 5.0 ± 0.2 | 4.0 ± 0.2 | 10.8 | – |
| SkKM 239 | 18.14 ± 0.10 | 0.08 | 15 ± 2 | 5.1 ± 0.5 | 3.0 ± 0.3 | 120.2 | – |
| SkKM 247 | 16.56 ± 0.07 | 0.08 | 30 − 40b | 2.5 − 3.1 | 3.9 ± 0.2 | 0.0 | – |
| SkKM 250 | 15.44 ± 0.08 | 0.08 | 30 − 40b | 3.0 − 3.7 | 3.9 ± 0.2 | 0.0 | – |
| SkKM 286 | 15.57 ± 0.05 | 0.08 | 23 ± 2 | 8.8 ± 0.6 | 4.2 ± 0.2 | 20.6 | Embedded |
| SkKM 310 | 18.86 ± 0.21 | 0.08 | 15 ± 2 | 4.5 ± 0.4 | 2.9 ± 0.3 | 117.2 | – |
| SkKM 320 | 17.76 ± 0.12 | 0.08 | 16 ± 2 | 6.3 ± 0.6 | 3.3 ± 0.3 | 81.8 | Embedded |
| LHA 115-S 7 | 13.80 ± 0.05 | 0.08 | 29 − 35b | 11.0 − 12.7 | 4.9 ± 0.3 | 10.0 | Hα emission |
| [M2002] SMC 54134 | 15.54 ± 0.03 | 0.08 | 25 ± 3 | 7.4 ± 0.2 | 4.2 ± 0.2 | 20.2 | – |
| PMMR 61 | 15.66 ± 0.04 | 0.08 | 21 ± 2 | 9.5 ± 0.5 | 4.1 ± 0.2 | 24.8 | – |
Notes. Ages are determined from comparisons with stellar models. a Fit parameters are determined assuming an SMC average E(B − V) = 0.08. For reference we also list the E(B − V) values found for nearest 20 O-type stars in the Table B.1. b For these targets we provide a range of parameters that are consistent with the observations. See Section 3.1 for more details.
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