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Table 2.
Observational constraints vs. MESA models for PTF1 J2238+7430.
| Parameter | Observed | Simulation |
|---|---|---|
| Porb [min] | 76.34179(2) | 76.330 |
| MsdB [M⊙] | 0.383 ± 0.028 | 0.405 |
| MWD [M⊙] | 0.725 ± 0.026 | 0.722 |
| RsdB [R⊙] | 0.190 ± 0.003 | 0.192 |
| RWD [R⊙] | 0.0109 ± 0.0003 | 0.011 |
| Teff, sdB [K] | 23,600 ± 400 | 23,190 |
| Teff, WD [K] | 26,800 ± 4,600 | 24,045 |
| log gsdB | 5.42 ± 0.06 | 5.477 |
| log gWD | – | 8.213 |
| AgesdB [Myr] | 170 | 104.316 |
| AgeWD [Myr] | 25 | 50.35 |
Notes. Comparison between the observational constraints of PTF1 J2238+7430 reported by Kupfer et al. (2022, KT22) and the results of our MESA simulations. The table lists the main stellar and orbital parameters used as benchmarks.
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