Soft X-ray Spectra of V5116 Sgr
XMM-Newton EPIC MOS1 (black) and EPIC MOS2 (red) spectra of V5116 Sgr, plotted together with the best fitted white dwarf (WD) atmosphere models.
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).