Table 1
Atmospheric properties and other parameters of our program stars.
| Parameter | J0546+0836 | J0927−6335 | J1332−3541 |
|---|---|---|---|
| Spectral type | [WC]-PG1159 | PG1159 | DAO |
| Teff (K) | 95000 ± 15 000 | 60000±5000 | 65 657 ± 2390 |
| log 𝑔 (cms−2) | 5.5 ± 0.5 | 7.0 ± 0.5 | 8.38 ± 0.08 |
| H | – | – | 0.65 ± 0.04 |
| He | <0.05 | 0.05 ± 0.05 | 0.35 ± 0.04 |
| C | 0.10 ± 0.05 | 0.47 ± 0.25 | – |
| O | 0.90 ± 0.05 | 0.48 ± 0.25 | – |
| R (R⊙) |  |
 |
0.010 ± 0.001 |
| M (M⊙) |  |
 |
0.89 ± 0.03 |
| L (L⊙) |  |
 |
 |
| E(B − V) (mag) (SED fit) | 0.29 | 0.15 | 0.032 |
| d (kpc) (SED fit) |  |
2.5 ± 0.9 |  |
| d (kpc) (Gaia) |  |
 |
 |
Notes. Element abundances given in mass fractions. Stellar radius, mass, and luminosity for J0546+0836 derived from post-AGB tracks of Miller Bertolami & Althaus (2006), for J0927−6335 from cooling tracks of Bédard et al. (2020), and for J1332−3541 from cooling tracks of Renedo et al. (2010), as displayed in Fig. 4. The Gaia distances were determined by E23 assuming a flat prior on MG,0.
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