Contribution of Type Ia and Type II Supernovae for Intra-Cluster Medium Enrichment

Details Contribution of Type Ia and Type II Supernovae for Intra-Cluster Medium Enrichment Contribution of Type Ia and Type II Supernovae for Intra-Cluster Medium Enrichment

1998-07-02

arxiv.org/abs/astro-ph/9807022v1

Astronomy and Astrophysics

Astrophysics

20 pages, LaTeX text and 15 postscript figures. Accepted for publication in Astrophysical Journal

Scientific paper

10.1086/306097

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 shown to exist by adopting the fitting formulas which 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 the better measure than $M_{Fe, SN Ia}/M_{Fe, total}$ 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 needs not to be emphasized too strongly. We need more precise observations to conclude whether ICMs really suffer the shortage problem of sulfur or not.

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