Coronal X-ray emission of II Peg: the BeppoSAX view Original Research Article

The BeppoSAX observation of II Peg confirms that this is a very active coronal source, with a possible detection of the decay of a strong X-ray flare. The NH value as determined by BeppoSAX is a factor of ten higher than expected. This is now a common result for various coronal sources observed by BeppoSAX, that still remains to be explained. The coronal metal abundance determined for II Peg by BeppoSAX is subsolar (∼ 0.3), in line with the results found for many other active stars. It is still an open question if this low metal abundance is in contradiction or not with the photospheric metallicity of II Peg.