Table 2
Best-fit values for the total mass parameters obtained through the X-ray analysis.
| rs | c200 | M200 |  [d.o.f.] |
|
| [kpc] | [1014 M⊙] | |||
|
|
||||
| (1) Blank-sky background | 350.3 ± 79.6 | 5.18 ± 0.84 | 9.32 ± 1.39 | 0.81 [4] |
| (2) Local background | 420.0 ± 99.5 | 4.67 ± 0.80 | 11.11 ± 2.06 | 0.46 [4] |
| (3) Fixed metallicity | 367.2 ± 98.6 | 5.13 ± 0.87 | 10.61 ± 1.96 | 0.33 [4] |
Notes. (1) the blank-sky dataset is adopted to estimate the X-ray background; (2) the X-ray background is derived from peripheral regions of the source observation; (3) the background is estimated locally fixing the gas metallicity to Z = 0.3 Z⊙. The columns indicate the best-fit values obtained for the NFW profile parameters (the scale radius rs and the concentration c200), the estimate of the total mass within R200 (here listed as M200) and the reduced χ2, referred to a fit with four degrees of freedom.
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