Table 1.
Parameters of the central star and the nebula in IRAS 00500+6713 determined from optical (Gvaramadze et al. 2019) and X-ray (this work) spectroscopy.
| Central star parameters from optical spectroscopy | |
| E(B − V) [mag] | 0.84 ± 0.04 |
| T* [kK] |
 |
| log Lbol/L⊙ | 4.6 ± 0.14 |
| log(Lmech/[erg s−1]) | ≈38.4 |
| Mass-loss rate Ṁ [M⊙ yr−1] | (3.5 ± 0.6)×10−6 |
| Wind velocity v∞ [km s−1] | 16 000 ± 1000 |
| XC | 0.2 ± 0.1 |
| XO | 0.8 ± 0.1 |
| XNe | 0.01 |
| Central star parameters from X-ray spectroscopy | |
| NH [cm−2] | (1.0 ± 0.2)×1022 |
| LX (0.2–12 keV) [erg s−1] | (1.2 ± 0.2)×1033 |
| log LX/Lbol | ≈ − 5 |
| log LX/Lmech | ≈ − 5 |
| TX [MK] | 1–100 |
| XC | 0.15 |
| XO | 0.61 |
| XNe | 0.10 ± 0.03 |
| XMg | 0.04 ± 0.02 |
| XSi | 0.06 ± 0.04 |
| XS | 0.04 |
| Nebula parameters from X-ray spectroscopy | |
| NH [cm−2] | (1.0 ± 0.2)×1022 |
| LX (0.2–12 keV) [erg s−1] | (3.0 ± 0.2)×1034 |
| TX [MK] | 1–20 |
| XC | 0.72 |
| XO | 0.13 ± 0.06 |
| XNe | 0.13 ± 0.04 |
| XMg | 0.02 ± 0.01 |
Notes. The distance 3.1 kpc was adopted. The O, C, and S abundances were fixed during the fitting of the central star spectra, while only the C abundance was fixed when fitting the nebula spectrum (see appendix). The error bars correspond to 1σ.
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