Table 3.
Parameters of the best-fit broken power-law model.
| Region | Rbreak (arcmin) | I0 (10−2 cts s−1 arcmin−2) | α1 | α2 |
|---|---|---|---|---|
| NW | 18.33 ± 0.08 | 1.29 ± 0.02 | 2.27 ± 0.08 | 5.85 ± 0.23 |
| SE | 6.76 ± 0.03 | 2.13 ± 0.02 | 1.18 ± 0.03 | 2.39 ± 0.03 |
| 17.52 ± 0.22 | 0.39 ± 0.01 | 0.88 ± 0.17 | 1.96 ± 0.05 | |
| SW | 9.75 ± 0.07 | 3.62 ± 0.05 | 1.19 ± 0.06 | 2.16 ± 0.01 |
| NE | 7.44 ± 0.04 | 5.07 ± 0.05 | 0.76 ± 0.03 | 1.80 ± 0.01 |
| 21.40 ± 0.14 | 0.75 ± 0.01 | 2.01 ± 0.04 | 3.70 ± 0.14 | |
Notes. Best-fit parameters of the broken power-law model to the surface brightness profile, with uncertainties quoted at the 1σ confidence level. The model includes the break radius (Rbreak), which marks the location of the surface brightness discontinuity; the inner and outer power-law indices (α1 and α2), which describe the slope of the profile on either side of the break; and the normalization constant (I0), which represents the surface brightness at the break radius.
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