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    PR # 31503                                                                   
     Previous X-ray observations have pointed out that the stars in the  s       
     pectral range late B/early A are devoid of X-ray emission.  However,        
     in the ROSAT all-sky survey we detected about 90 late B-type stars of       
      spectral type B7-B9.  Follow up observations with the ROSAT HRI have       
      shown that the X-ray emission of most of these late B-type star cann       
     ot ascribe to late-type companions.  On the other hand, neither the m       
     odel for early type star X-ray production nor the model for X-ray pro       
     duction in late-type stars can be attributed to the X-ray emission of       
      late B-type stars.  In order to investigate the X-ray spectra of the       
     se hitherto unknown class of stellar X-ray emitters we propose to obs       
     erve the two single stars (u Lep, 93 Tau) with ASCA                         
                                                                                 
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