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   PR # 41019
   We propose to observe star forming regions B18 and #13 in the Taurus
   Molecular Cloud with ASCA satellite. Our prime concern is how young
   stellar objects evolve. Particularly we are interested in the changes
   of their X-ray luminousities with evolution. Young stellar objects
   are deeply embedded, so X-ray emission of their central stars is
   heavily absorbed. Especially in Classical T Tauri Stars, it is
   thought that their X-ray luminousities determined by soft X-ray data
   are doubtful. The anticipated data will allow us to determine
   accurate their X-ray luminosities and will provide some information
   on the hidden central stars.
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