hemical enrichment of the ICM within the Virgo cluster I: radial profiles

We present a detailed analysis of the elemental abundances distribution ofthe Virgo cluster using {\it XMM-Newton} observations. We included in theanalysis a new EPIC-pn energy scale calibration which allow us to measurevelocities with uncertainties down to $\Delta v \sim 150$ km/s. We investigatethe radial distribution of O, Ne, Mg, Si, Ar, S, Ca, Ni and Fe. We found thatthe best-fit model is close to a single-temperature component for distances$>80$~kpc and the cooler gas is more metal-rich. Discontinuities in temperatureare found around $\sim30$~kpc and $\sim90$~kpc, which correspond to the radiusof the cold fronts. We modeled elemental X/Fe ratio profiles with a linearcombination of SNIa and SNcc models. We found a flat radial distribution ofSNIa ratio over the total cluster enrichment, which supports an early ICMenrichment scenario, with most of the metals present being produced prior toclustering.