  One method of discriminating between the many Type Ia progenitor scenarios is
by searching for contaminating hydrogen and helium stripped from the companion
star. We present several high-resolution 2-D numerical simulations of the
impact of a Type Ia supernova explosion with hydrogen-rich main sequence,
subgiant, and red giant companions. The binary parameters were chosen to
represent several classes of single-degenerate Type Ia progenitor models that
have been suggested in the literature. We use realistic stellar models and
supernova debris profiles to represent each binary system. For each scenario,
we explore the hydrodynamics of the supernova-secondary interaction, calculate
the amount of stellar material stripped from the secondary and the kick
delivered by the impact, and construct the velocity and solid angle
distributions of the stripped material. After the impact, the main sequence
star is puffed up, much like a pre-main sequence star. The subgiant companion
behaves similarly. The secondary will not be contaminated by much supernova
debris from the initial impact, but it may accrete low-velocity iron-group
elements (or oxygen and silicon if the ejecta is radially mixed) at late times.
A He pre-white dwarf will be left behind after a supernova explosion with a red
giant companion.
