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Table 1.

Best-fit parameters for the two-component hydrogen and carbon atmosphere models assuming a distance fixed to 4.9 kpc.

Parameter hatm carbatm
NH 1022, atoms cm−2 4.8(4) 5.0(1)
kT1, keV 1.4(2) 1.73(1)
kT2, keV 3.9(2)
δ 0.0098(4)
χ2/d.o.f. 107.6/114 115.0/116

Notes. Uncertainties are quoted at the 1σ confidence level.

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