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Table A.2.

Best-fit values for the broadband χ2 fit of combined XMM-Newton and NuSTAR observation of NGC 300 ULX-1 for phase-average (FULL) spectra for the MCAE model without the Gaussian absorption line.

dBB soft
(d)BB hot
PL tail
Red.χ2(d.o.f.)
nH kTdisk Kdisk kThot Khot Γ KPL
(1021 cm−2) keV keV (×10−3) (×10−5)
dBB 0.94 0.29 ± 0.02 11.5 2.40 6.87 1.12 2.31 1.10 (764)
BB 1.13 0.26 ± 0.03 10.7 1.56 ± 0.03 69.5 1.99 ± 0.05 66.1 1.11 (764)

Notes. The continuum was fit separately with the xspec diskbb and bbodyrad (second row) models for the hot thermal emission. All errors are within the 90% confidence range. Kdisk is the normalization parameter for the diskbb component. Kdisk = (Rdisk/D10 kpc)2 cosi and Khot = (Rdisk/D10 kpc)2 for the bbodyrad model (second row), where Rdisk is the inner radius of the disk in km, D10 kpc is the distance in units of 10 kpc, and i is the inclination. Khot is the same as Kdisk, but for the hot MCD component. KcPL and KPL are the power-law normalization parameters in units of photons/keV/cm2/s at 1 keV.

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