Multi-Temperature Emission and Abundances in the Hot Gaseous Halo

We propose sensitive XMM observations of the hot gaseous halo of NGC 507 withthe main purpose of unambiguously determining metal abundances. NGC 507 wasselected because it is very bright and exhibits a signature of multitemperatureemission not only in the core, but also at the outskirts, hence it.s one of thebest candidates to investigate the issue on the actual metal abundances in hotXray halos. The determination of elemental abundances has strong implicationson the supernova II and Ia rates and on the IMF, and consequently on thestructure and history of the hot gaseous halo. With these data, we will alsoinvestigate the central cooling core and determine the nature of the softsources detected at the outskirts with the ROSAT PSPC. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]