  We present results from VLBA observations of the 1667 and 1665 MHz OH lines
in the two OH megamaser galaxies IRAS12032+1707 and IRAS14070+0525. For
IRAS12032+1707 we also present Arecibo HI absorption data. Almost all OH
emission previously detected by single dish observations has been recovered in
IRAS12032+1707 and is found on a compact scale of <100 pc. The emission shows
an ordered velocity field that is consistent with a single disk. However, the
data is also consistent with a scenario including two physically different gas
components. We explore this possibility, in which the two strongest and most
blueshifted maser features are identified as the tangent points of a
circumnuclear torus. The redshifted maser features would be extended in a
direction perpendicular to the torus, which is in the direction of the merger
companion. Thus, redshifted emission could be associated with an inflow
triggered by a tidal interaction. HI absorption covers the velocities of the
redshifted maser emission, suggesting a common origin. In the second source,
IRAS14070+0525, a large fraction of the OH emission is resolved out with the
VLBA. We find no significant evidence of an ordered velocity field in this
source, but these results are inconclusive due to a very low signal-to-noise
ratio.
