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Table 2
Spectral types, atmospheric parameters, chemical abundances (1), and Kiel masses (2) of our program stars.
| Name | Spectral type | Teff (kK) | log g | He | C | N | O | M(M⊙) |
|---|---|---|---|---|---|---|---|---|
| Abell 52 | O(He) | 130 ± 20 | 5.9 ± 0.3 | 0.99 | − | 0.01 | − | 0.57 (+0.23,−0.06) |
| Alves 5 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.55 (+0.09,−0.03) |
| Dr 37 | PG1159/lgE | 150 ± 20 | 6.5 ± 0.5 | 0.49 | 0.49 | − | 0.02 | 0.55 (+0.16,−0.03) |
| Ek 3 | PG1159/A | 110 ± 15 | 7.0 ± 0.5 | 0.78 | 0.22 | − | ≤0.06 | 0.51 (+0.08,−0.04) |
| Fal 3 | PG1159/lgE | 150 ± 20 | 6.8 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.54 (+0.08,−0.02) |
| Fal Objet 1 | O(He) | 140 ± 20 | 6.0 ± 0.3 | 0.99 | − | 0.01 | − | 0.58 (+0.23,−0.06) |
| HaWe 15 | PG1159/E | 130 ± 20 | 7.5 ± 0.5 | 0.74 | 0.20 | − | 0.06 | 0.59 (+0.19,−0.08) |
| K 1-17 | PG1159/lgE | 160 ± 20 | 7.0 ± 0.5 | 0.49 | 0.49 | — | 0.02 | 0.56 (+0.05,−0.03) |
| K2-1 | PG1159/lgE | 150 ± 20 | 6.5 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.55 (+0.16,−0.03) |
| Kn 58 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.55 (+0.09,−0.03) |
| Kn 62 | PG1159/lgE | 150 ± 20 | 6.5 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.55 (+0.16,−0.03) |
| Kn 63 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.55 (+0.09,−0.03) |
| Kn 121 | O(He) | 150 ± 20 | 6.2 ± 0.3 | 0.99 | − | 0.01 | − | 0.58 (+0.18,−0.06) |
| NGC 6765 | PG1159/lgE | 180 ± 20 | 6.5 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.61 (+0.27,−0.05) |
| NHZ 2 | PG1159/E | 130 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.52 (+0.09,−0.01) |
| Ou 7 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.55 (+0.09,−0.03) |
| Pa 28 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.47 | 0.01 | 0.05 | 0.55 (+0.09,−0.03) |
| Pa 144 | O(He) | 130 ± 20 | 5.7 ± 0.3 | 0.99 | − | 0.01 | − | 0.62 (+0.30,−0.10) |
| Pa 146 | O(He) | 140 ± 20 | 6.0 ± 0.3 | 0.99 | − | 0.01 | − | 0.58 (+0.23,−0.06) |
| Pa 153 | PG1159/E | 150 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.55 (+0.09,−0.03) |
| Pa 180 | DOZ | 70 ± 5 | 7.5 ± 0.3 | 0.99 | 0.01 | − | − | 0.51 (+0.07,−0.03) |
| Pa J0637+3327 | PG1159/E | 130 ± 20 | 7.5 ± 0.5 | 0.74 | 0.20 | − | 0.06 | 0.59 (+0.19,−0.08) |
| PFP 1 | PG1159/E | 140 ± 20 | 7.5 ± 0.5 | 0.74 | 0.20 | — | 0.06 | 0.60 (+0.19,−0.08) |
| StDr 13 | PG1159/E | 140 ± 20 | 7.5 ± 0.5 | 0.74 | 0.20 | − | 0.06 | 0.60 (+0.19,−0.08) |
| StDr 29 | DOZ | 100 ± 15 | 7.7 ± 0.3 | 0.98 | ≤0.01 | 0.02 | − | 0.61 (+0.09,−0.06) |
| StDr 61 | DOZ | 75 ± 5 | 7.5 ± 0.3 | 0.97 | 0.03 | — | — | 0.52 (+0.07,−0.03) |
| StDr 144 | PG1159/E | 130 ± 20 | 7.0 ± 0.5 | 0.74 | 0.20 | − | 0.06 | 0.52 (+0.09,−0.01) |
| StDr 162 | O(He) | 120 ± 20 | 6.0 ± 0.3 | 1.00 | − | ≤0.01 | − | 0.53 (+0.14,−0.03) |
| TaWe 1 | PG1159/E | 140 ± 20 | 7.0 ± 0.5 | 0.47 | 0.48 | — | 0.05 | 0.54 (+0.09,−0.02) |
| WHTZ 1 | PG1159/lgE | 180 ± 20 | 6.5 ± 0.5 | 0.47 | 0.48 | − | 0.05 | 0.61 (+0.27,−0.05) |
Notes. (1)Element abundances of best-fit models in mass fractions; see text for their estimated errors. (2)Masses determined from the evolutionary tracks displayed in Fig. 1.
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