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Table 2.
Best-fit results and uncertainties.
| Parameters | Kes 73 | RCW 103 | N49 |
|---|---|---|---|
| Bin-averaged values (range) based on spectral fits | |||
 |
1.11 (0.89–1.49) | 1.24 (0.88–1.91) | 1.09 (0.91–1.42) |
| d.o.f. | 330 (268–397) | 220 (176–276) | 233 (170–293) |
| NH (1022 cm−2) | 3.8 (3.3–4.8) | 0.89 (0.45–1.48) | 0.11 (< 0.38) |
| kT | 0.96 (0.72–1.43) | 0.63 (0.28–1.14) | 0.68 (0.50–0.92) |
| [O] | 1.72 (0.14–6.42) | 1.48 (0.37–4.90) | 0.95 (0.26–2.76) |
| [Ne] | = [O] | 1.37 (0.50–2.38) | 1.19 (0.40–3.66) |
| [Mg] | 1.12 (0.61–2.55) | 0.96 (0.65–1.74) | 0.47 (0.14–1.37) |
| [Si] | 1.14 (0.71–2.07) | 0.74 (0.43–1.78) | 0.58 (0.24–1.58) |
| [S] | 1.27 (0.73–2.21) | 0.72 (0.10–8.62) | 1.59 (0.25–3.37) |
| [Ar] | 0.96 (0.12–2.54) | 1 (fixed) | 1 (fixed) |
| [Fe]=[Ni] | 1 (fixed) | 1 (fixed) | 0.27 (0.15–0.45) |
| τ (1011 s cm−3) | 2.23 (0.95–6.03) | 7.02 (> 4.38) | 28.0 (> 2.26) |
| Bin-averaged density, total values, and 1-σ uncertainties | |||
| nH (cm−3) |
 |
5.9 ± 0.2 | 6.6 ± 0.3 |
| MSNR (M⊙) |
 |
12.8 ± 0.4 |
 |
| tsedov (kyr) | ∼2.4 | ∼2.1 | ∼4.9 |
| E0 (erg) | ∼5.4 × 1050 | ∼1.0 × 1050 | ∼1.7 × 1051 |
| FX (0.5–7 keV; 10−11 erg) | 2.5 | 17.4 | 2.3 |
| Mass-averaged values and 1-σ uncertainties | |||
| [O] | 1.54 ± 0.2 | 1.53 ± 0.11 | 0.96 ± 0.12 |
| [Ne] | = [O] | 1.35 ± 0.08 | 1.21 ± 0.16 |
| [Mg] | 1.1 ± 0.1 | 0.96 ± 0.05 | 0.47 ± 0.06 |
| [Si] | 1.1 ± 0.1 | 0.74 ± 0.05 | 0.57 ± 0.07 |
| [S] | 1.3 ± 0.1 |
 |
1.55 ± 0.20 |
| [Ar] | 1.0 ± 0.1 | 1 (fixed) | 0.62 (fixed) |
| [Fe] = [Ni] | 1 (fixed) | 1 (fixed) | 0.27 ± 0.03 |
| MO (M⊙) |
 |
 |
0.26 ± 0.05 |
| MNe (M⊙) |
 |
5.8 ± 0.6 × 10−3 | 8.7 ± 1.5 × 10−2 |
| MMg (M⊙) |
 |
… | … |
| MSi (M⊙) |
 |
… | … |
| MS (M⊙) |
 |
… | 2.9 ± 0.4 × 10−2 |
| MAr (M⊙) | … | … | … |
| MFe (M⊙) | … | … | … |
Notes. The “…” sign indicates that the ejecta mass cannot be calculated because the abundance is lower than the solar or LMC value.
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