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   63009
   We propose to obtain phase-resolved ASCA observations of the dwarf nova
   OY Car during quiescence. The presence or absence of eclipse will test
   if the X-ray source previously observed with the PSPC is the boundary
   layer as in other low mass accretion rate systems. In addition, we will
   search for a highly absorbed boundary layer component at higher
   energies. This will allow us to constrain the local column density, and
   resolve the apparent discrepancies between the values measured in the
   X-ray, and those deduced from the ``iron curtain'' seen in the HST UV
   spectra. We are requesting HST time simultaneous with the ASCA
   observations, so this proposal is Time Critical.
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