*************************************************************************
   51243
   The measurement of velocity dispersion and plasma temperature indicates
   that galaxies and intracluster medium(ICM) in an cluster are bound in
   the same potential. However there are no significant correlations
   between physical parameters derived from optical and X-ray
   observations. The detailed optical observations of Abell
   clusters(z<0.1) in southern sky are carried out by ESO key programme.
   We have selected two rich clusters, A3128(z=0.0600) and
   A3695(z=0.0893). We make clear the correlation among the distribution
   of galaxies, ICM and dark matter in these clusters by combining ASCA
   data and ESO optical data. This method is aimed at investigating the
   $\\beta$-problem, origin of ICM and cluster merging.
 *************************************************************************