The disc-eclipsed Supersoft Source in thepost-outburst nova V5116 Sgr

摘要

The classical nova V5116 Sgr 2005 No. 2 was observed with XMM-Newton in March 2007 and March 2009. EPIC results of the 2007 observations suggested that the post-outburst supersoft source (SSS) was partially eclipsed by an asymmetric accretion disk in a high inclination system. RGS high resolution spectra show a number of absorption and emission features, some of them evolving along the changing light-curve of this source, in a way that is consistent with the proposed scenario. The last XMM-Newton observation in March 2009 shows only a faint source, harder than in 2007, indicating the turn-off of the SSS.