******************************************************                         
    PR # 32011                                                                   
     The target 47 Cas was identified in the ROSAT X-ray All-Sky Survey as       
      one of the strongest single X-ray sources, and at a distance of 38         
      pc, as one of the most X-ray luminous main-sequence stars known (log       
      LX = 30.5). Its spectral type of F0V locates the star in a regime          
      where it should have a very shallow convective zone and where acoust       
     ic heating is thought to be the dominant source for hot coronae. Howe       
     ver, X-ray rotational modulation (P = 0.97d), strong flares, and stro       
     ng CIV 1550A emission argue for a magnetic, solar-like corona. The pr       
     oposed ASCA observations will be ideal to study the structuring and t       
     he elemental abundances in this corona. A significant fraction of the       
      rotation period will be covered. Supporting observations at other wa       
    veleng                                                                       
  ******************************************************