Table 2.
Results of the fit to the spectra of NGC 3227.
| Parameter | Epoch A | Epoch B | Epoch C | Epoch D | Epoch E | Epoch F | Epoch G | Epoch H | Epoch I |
|---|---|---|---|---|---|---|---|---|---|
| Model I : const*TBabs*zTBabs(zpo + zgauss) | |||||||||
| Γ | 1.56 |
1.55 |
1.61 |
1.63 |
1.66 |
1.63 |
1.61 |
1.64 |
1.48 |
| NH(zTBabs) | – | – | – | – | – | – | 2.91 |
4.66 |
4.57 |
| E | 6.35 |
6.38 |
6.33 |
6.32 |
6.30 |
6.34 |
6.23 |
6.28 |
6.38 |
| EW | 149 |
188 |
142 |
129 |
86 |
115 |
115 |
123 |
269 |
| Norm | 71 |
58 |
73 |
90 |
101 |
92 |
122 |
76 |
17 |
| χ2/d.o.f. | 930/826 | 752/706 | 834/704 | 909/777 | 815/790 | 684/717 | 1081/935 | 600/595 | 257/247 |
| CFPMA/FPMB | 1.04 |
1.02 |
1.01 |
1.01 |
1.02 |
1.00 |
0.99 |
1.04 |
1.06 |
| Model II : const*TBabs*zTBabs(pexrav + zgauss) | |||||||||
| Γ | 1.68 |
1.64 |
1.77 |
1.83 |
1.88 |
1.82 |
1.92 |
1.85 |
1.70 |
| NH(zTBabs) | – | – | – | – | – | – | 6.43 |
7.71 |
8.52 |
| Ecut | 212 |
163 |
> 254 | > 1147 | > 411 | > 406 | > 571 | > 775 | > 126 |
| R | 0.52 |
0.48 |
0.53 |
0.55 |
0.73 |
0.55 |
0.83 |
0.45 |
0.38 |
| E | 6.35 |
6.38 |
6.33 |
6.32 |
6.31 |
6.34 |
6.23 |
6.28 |
6.38 |
| EW | 137 |
177 |
129 |
116 |
74 |
102 |
85 |
102 |
231 |
| Norm | 84 |
66 |
91 |
119 |
139 |
120 |
207 |
112 |
25 |
| χ2/d.o.f. | 856/824 | 711/704 | 784/702 | 831/775 | 714/788 | 625/715 | 920/933 | 577/593 | 253/245 |
| CFPMA/FPMB | 1.04 |
1.02 |
1.01 |
1.01 |
1.02 |
1.00 |
0.99 |
1.04 |
1.06 |
| Model III : const*TBabs*zTBabs(xillver) | |||||||||
| Γ | 1.69 |
1.69 |
1.77 |
1.83 |
1.80 |
1.79 |
1.77 |
1.87 |
1.91 |
| NH(zTBabs) | – | – | – | – | – | – | 4.73 |
8.58 |
12.12 |
| Ecut | 127 |
92 |
204 |
> 439 | 378 |
326 |
248 |
> 510 | > 198 |
| R | 0.86 |
1.09 |
0.85 |
0.76 |
0.61 |
0.71 |
0.68 |
0.64 |
1.36 |
| Norm | 1.98 |
1.46 |
2.01 |
2.98 |
2.97 |
2.75 |
3.73 |
2.72 |
0.68 |
| χ2/d.o.f. | 868/826 | 728/706 | 785/704 | 837/777 | 735/790 | 627/717 | 976/935 | 579/595 | 260/247 |
| CFPMA/FPMB | 1.04 |
1.02 |
1.01 |
1.01 |
1.02 |
1.00 |
0.99 |
1.04 |
1.06 |
| Model IV : const*TBabs*zTBabs(xillverCP) | |||||||||
| Γ | 1.78 |
1.80 |
1.83 |
1.84 |
1.83 |
1.83 |
1.82 |
1.87 |
1.91 |
| NH(zTBabs) | – | – | – | – | – | – | 4.97 |
8.17 |
12.21 |
| kTe | 33 |
28 |
56 |
> 80 | > 45 | > 47 | 50 |
> 85 | > 36 |
| R | 0.79+0.11−0.11 | 0.96+0.18−0.10 | 0.83 |
0.78 |
0.62 |
0.71 |
0.67 |
0.65 |
1.28 |
| Norm | 1.94 |
1.52 |
1.89 |
2.56 |
2.55 |
2.50 |
3.32 |
2.24 |
0.66 |
| χ2/d.o.f. | 881/826 | 746/706 | 790/704 | 838/777 | 733/790 | 629/717 | 970/935 | 581/595 | 261/247 |
| CFPMA/FPMB | 1.04 |
1.02 |
1.01 |
1.01 |
1.02 |
1.00 |
0.99 |
1.04 |
1.06 |
| Flux | 1.04 |
0.86 |
0.94 |
1.11 |
1.15 |
1.13 |
1.55 |
0.88 |
0.27 |
Notes. Models are Model I: const*TBabs*zTBabs(zpo + zgauss), Model II: const*TBabs*zTBabs(pexrav + zgauss), Model III: const*TBabs*zTBabs(xillver), and Model IV: const*TBabs*zTBabs(xillverCP). The zTBabs component is added with all the models to fit the epoch G, H, and I spectra. The fluxes are in units of 10−10 erg cm−2 s−1 in the 4–60 keV band except in epoch I, where the flux was calculated in the 4–50 keV band. The energy (E) of the FeKα line, the equivalent width (EW) of the line, Ecut, and kTe are expressed in units of keV, model normalization is in units of 10−4 photons keV−1 cm−2 s−1, and NH(zTBabs) is the host galaxy hydrogen column density in units of 1022 atoms cm−2. CFPMA/FPMB is the cross-calibration constant. The width of the FeKα line was fixed to 0.1 keV during the fitting.
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