Abstract
The origin of the chemical composition of the intracluster medium (ICM) is discussed in this paper. In particular, the contribution from Type Ia supernovae (SNe Ia) to the ICM enrichment is demonstrated by adopting the fitting formulas that have been used in the analysis of the solar system abundances. Our analysis means that we can use the frequency of SNe Ia relative to SNe II as a better measure than MFe,SN Ia/MFe,total for estimating the contribution of SNe Ia. Moreover, the chemical compositions of ICMs are shown to be similar to that of the solar system abundances. We can also reproduce the sulfur/iron abundance ratio within a factor of 2, which means that the abundance problem of sulfur does not need to be emphasized too strongly. We need more precise observations to conclude whether ICMs really suffer a sulfur shortage problem or not.
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