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Soft X-ray Spectra of V5116 Sgr
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Soft X-ray Spectra of V5116 Sgr

January 25, 2013
XMM-Newton EPIC MOS1 (black) and EPIC MOS2 (red) spectra of V5116 Sgr, plotted together with the best fitted white dwarf (WD) atmosphere models. (A) Low-flux spectra fit with a carbon/oxygen WD atmosphere model (B) Low-flux spectra fit with an oxygen/neon WD atmosphere model (C) High-flux spectra fit with an oxygen/neon WD atmosphere model Below each spectrum the deviation of the model from the spectrum is plotted. The results show that the carbon/oxygen atmosphere model does not fit the observations (A). The oxygen/neon model fits both the low- and high-flux state of V5116 Sgr and the atmosphere temperature of the fitted model was found to be 6.1±0.1 × 105 K, both for the low- and high-flux state (B & C). Copyright: G. Sala et al.