Deconvolved ﹩\nu {F}_{\nu }﹩ spectrum of EXO 0748−676 and the results of fitting with physical models. (a) Fit with a diskbb (soft component) plus nthcomp[bbody] (hard component) model with Galactic absorption, and its residuals. (b) Improvement of panel (a) by multiplying a partial ionized absorber zxipcf (Reeves et al. 2008). (c) Improvement of panel (b) by including a Gaussian absorption feature at ∼1 keV. (d) A double-seed Comptonization solution employing an nthcomp[diskbb] (soft component) plus nthcomp[bbody] (hard component) model. The two Comptonized components have a common electron temperature but different optical depths.