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    PR # 31227                                                                   
     We propose to measure metal abundance and mass of the hot cluster med       
     ium in very poor clusters of galaxies with L_x around 1 x 10^(43) erg       
     /s. If ICM of these systems consists mostly of the gas injected from        
     galaxies, then very high metal abundance is expected. The correlation       
      between M_gas/M_stellar and kT should be re-examined with the low-ba       
     ckground detectors on ASCA. Also, the observation of these poorest cl       
     usters will show us whether or not the ratio M_total/M_luminous corre       
     lates with the size of the system.                                          
                                                                                 
                                                                                 
                                                                                 
                                                                                 
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