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Table 8
Parameters of G191−B2B as derived by our analysis.
| Teff / K | 60 000 ± 2000 | ||
| log (g/cm/s2) | 7.60 ± 0.05 | ||
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| Mass | Number | ||
| Element | [X] | ||
| fraction | |||
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| H | 9.99 × 10-1 | 1.0 | 0.132 |
| He | <1.98 × 10-5 | <5.0 × 10-6 | <−4.099 |
| C | 7.15 × 10-6 | 6.0 × 10-7 | −2.520 |
| N | 2.08 × 10-6 | 1.5 × 10-7 | −2.522 |
| O | 1.90 × 10-5 | 1.2 × 10-6 | −2.479 |
| Al | 1.12 × 10-5 | 4.2 × 10-7 | −0.695 |
| Si | 5.01 × 10-5 | 1.8 × 10-6 | −1.123 |
| P | 1.54 × 10-6 | 5.0 × 10-8 | −0.579 |
| S | 5.72 × 10-6 | 1.8 × 10-7 | −1.733 |
| Ti | <3.13 × 10-7 | <1.1 × 10-7 | <−0.100 |
| Cr | <1.66 × 10-6 | <5.1 × 10-7 | <−0.100 |
| Mn | <1.08 × 10-6 | <3.2 × 10-7 | <−0.100 |
| Fe | 4.98 × 10-4 | 9.0 × 10-6 | −0.414 |
| Co | <4.92 × 10-7 | <1.2 × 10-7 | <−0.100 |
| Ni | 3.49 × 10-5 | 6.0 × 10-7 | −0.310 |
| Zn | 1.30 × 10-5 | 2.0 × 10-7 | 0.873 |
| Ge | 3.24 × 10-6 | 4.5 × 10-8 | 1.135 |
| Sn | 3.53 × 10-7 | 3.0 × 10-9 | 1.569 |
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| E B − V | 0.0005 ± 0.0005 | ||
| log (NH i/cm2) |
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| log (ND i / cm2) |
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| d/pc | 62 ± 4 | ||
| M / M⊙ |
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| R/R⊙ |
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| log (L / L⊙) |
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