Uniform Contribution of Supernova Explosions to the Chemical Enrichment
  of Abell 3112 out to R200
  The spatial distribution of the metals residing in the intra-cluster medium
(ICM) of galaxy clusters records all the information on a cluster's
nucleosynthesis and chemical enrichment history. We present measurements from a
total of 1.2 Ms Suzaku XIS and 72 ks Chandra observations of the cool-core
galaxy cluster Abell 3112 out its virial radius (~ 1470 kpc). We find that the
ratio of the observed supernova type Ia explosions to the total supernova
explosions has a uniform distribution at a level of 12-16% out to the cluster's
virial radius. The observed fraction of type Ia supernova explosions is in
agreement with the corresponding fraction found in our Galaxy and the chemical
enrichment of our Galaxy. The non-varying supernova enrichment suggests that
the ICM in cluster outskirts was enriched by metals at an early stage before
the cluster itself was formed during the period of intense star formation
activity. Additionally, we find that the 2D delayed detonation model CDDT
produces significantly worse fits to the X-ray spectra compared to simple 1D W7
models. This is due to the relative overestimate of Si, and underestimate of
Mg, in these models with respect to the measured abundances.
