A 10 kpc Scale Seyfert Galaxy Outflow: HST/COS Observations of IRAS
  F22456-5125
  We present analysis of the UV-spectrum of the low-z AGN IRAS-F22456-5125
obtained with the Cosmic Origins Spectrograph on board the Hubble Space
Telescope. The spectrum reveals six main kinematic components, spanning a range
of velocities of up to 800 km s-1, which for the first time are observed in
troughs associated with CII, CIV, NV, SiII, SiIII, SiIV and SIV. We also obtain
data on the OVI troughs, which we compare to those available from an earlier
FUSE epoch. Column densities measured from these ions allow us to derive a
well-constrained photoionization solution for each outflow component. Two of
these kinematic components show troughs associated with transitions from
excited states of SiII\ and CII. The number density inferred from these
troughs, in combination with the deduced ioinization parameter, allows us to
determine the distance to these outflow components from the central source. We
find these components to be at a distance of ~ 10 kpc. The distances and the
number densities derived are consistent with the outflow being part of a
galactic wind.
