The abundance pattern of O, Mg, Si and Fe in the intracluster medium of the Centaurus cluster observed with XMM-Newton
作者： H. Böhringer , K. Matsushita , Y. Ikebe , I. Takahashi
DOI: 10.1051/0004-6361:20041577
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摘要: The abundances of 0, Mg, Si, and Fe in the intracluster medium Centaurus cluster are derived. abundance has a negative radial gradient. In solar units, Si is close to abundance, while O Mg much lower. high Fe/O Si/O ratios indicate that metal supply from supernovae la important synthesize as does Fe. Within 2', consistent with stellar metallicity cD galaxy derived 2 index. This result indicates central gas dominated by galaxy. observed pattern resembles those center other clusters groups galaxies. However, Si/Fe ratio 40% higher 30% lower than M 87, respectively. Since accumulation timescale greater cluster, these differences imply time dependence nucleosynthesis la.
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