******************************************************
   PR # 22139
    At present, there is considerable uncertainty in the distribution of 
    heavy elements in groups and clusters of galaxies.  The combined     
    spatial and spectral resolution of ASCA is ideal for investigating   
    this problem. We propose to observe the x-ray luminous MKW4 group of 
    galaxies has a gas temperature of 1.7~keV.The x-ray emission from gas
    w/$kT\sim 1-2$~keV is dominated by numerous emission lines from heavy
    elements.  Our proposed observation will determine the abundance and 
    spatial distribution of a number of heavy elements, including        
    elements synthesized in both type Ia SN (e.g., Fe) and type II SN    
    (e.g., O and Mg).  This information will be used to determine the    
    origin of heavy elements in groups of galaxies (i.e., galactic winds 
   or ram pressure stripping).   
 ******************************************************