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   PR # 12112
      We propose a detailed study of the Abell cluster A194 in which the
    primary scientific goals are 1)to measure the abundances of the indiv
    idual heavy elements in both the intracluster gas and the hot coronae
    of the bright elliptical galaxies in A194; 2) to explore the relative
    importance of the heavy element production of type Ia and type II sup
    ernovae(including type Ib and Ic which also have massive progenitors)
    for the enrichment of the ICM and the galactic coronae;and 3)to deter
    mine the evolution of typeII and type Ia supernova rates by comparing
    the masses of their products measured in the ICM to that predicted by
    models. Such an investigation will yield a better understanding of
    the evolution of the supernova rate over cosmological time.

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