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   PR # 41216
   We propose to observe two X-ray luminous clusters of galaxies A576
   and A2657, which keeps no cD galaxies in their central region. The
   purpose of the observation is to study the scenario of the metal
   ejection from elliptical galaxies into the intracluster medium. The
   metal abundance distribution in clusters will enable us to determine
   whether ram pressure stripping or ejection by wind is the dominant
   process for ejection. Also we can determine when the stripping
   occured mainly in the cluster history by analyzing the abundance
   ratio between several elements such as Fe and Si. These observational
   information will cause great advance in the historical study of
   clusters and ICM.
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