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Table 1.
Best fit results and the relative reduced chi-square values (
) for the comparison between the optical/UV spectra computed with CLOUDY and the IUE+UBV spectrum of the outburst of 29 April 1981.
| Input spectrum | Rout | n0 | α |  |
C IVλ1550 | He IIλ1640 |
|---|---|---|---|---|---|---|
| log10(cm) | log10(cm) | (13 d.o.f.) | log10(erg s−1) | log10(erg s−1) | ||
| Bremmstrahlung | 12.42 ± 0.05 | 12.78 ± 0.11 | 0.60 ± 0.14 | 2.12 | 35.8 | 36.1 |
| Black body | 12.42 ± 0.05 | 12.78 ± 0.11 | 0.60 ± 0.14 | 1.32 | 36.2 | 35.9 |
| Comptonization | 12.63 ± 0.07 | 12.78 ± 0.11 | 1.11 ± 0.14 | 1.44 | 36.2 | 36.2 |
Notes. The best fit parameters were obtained assuming Lx = 2.5 × 1038 erg s−1 (1–20 keV) and a spherical geometry.
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