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    PR # 31023                                                                   
     It is very important to observe star forming region in the hard X-ray       
      band because the hard X-ray is transparent even in dark clouds. The        
     Chamaeleon II cloud is suitable for X-ray study of pre main seqence s       
     tars because of  their proximity and relative small size. Main purpos       
     e of mapping observations of the cloud is to make clear the  mechanis       
     m of star formation and star evolution. Scientific objectives are sum       
     marized as follows. 1) Search for pre main sequence stars and proto s       
     tars embedded deeply in  the cloud. 2) Determination of the spectral        
     parameters (temperature, abundance). 3) When do the X-ray activities        
     start? X-ray activities is connected with  their surface magnetic act       
     ivities.                                                                    
                                                                                 
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