X-ray spectrum of HOPS 383 and background determination. Panels a and b: top panels: source-plus-background extracted cumulative spectrum (gold filled area) and XSPEC best-fit model (green), source model (blue), background region cumulative spectrum (orange) and model (red), and scaled background model (pink). The vertical dashed-dotted line is the energy of the 6.4 keV line arising from neutral or low-ionization iron. Bottom panels: model-minus-data residuals. Panel b: absorbed coronal thin emission (cyan) and 6.4 keV Gaussian emission line (silver filled area).