*************************************************************************
   51108
   We propose to observe dwarf spheroidal galaxies, Carina, Leo I to
   detect the hot X-ray gas in the possible dark halo. Recent observations
   as well as optical observations of these galaxies strongly suggest that
   dwarf spheroidals have experienced several star bursts in the past. It
   is likely that the gas is still kept in the dark halo and will
   eventually fall down to a galaxy causing yet another star burst. We
   therefore try to detect the hot gas in the halo. Chemical abundance
   study of the hot gas will provide a direct comparison to optical
   spectrospocy of individual stars, and the hard X-ray sources will tell
   us the fraction of SNIa progenitors in these galaxies.
 *************************************************************************