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    PR # 31109                                                                   
     Recent observations show that there is as much hot gas in groups of g       
     alaxies  as in clusters of galaxies. From X-ray observations of group       
     s of galaxies,  we can estimate the distributions of Dark Matter and        
     hot gas as clusters of  galaxies. Moreover the whole characteristics        
     is thought to be influenced by  its individual members in groups than       
      in clusters. We propose to observe  spiral dominant compact galaxy H       
     CG57 in order to investigate the difference  between elliptical-domin       
     ants and spiral-dominants..                                                 
                                                                                 
                                                                                 
                                                                                 
                                                                                 
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