Distribution of the heavy elements throughout the extended narrow line
  region of the Seyfert galaxy NGC 7212
  The latest observations of line and continuum spectra emitted from the
extended narrow line region (ENLR) of the Seyfert 2 galaxy NGC 7212 are
analysed using models accounting for photoionization from the active nucleus
and shocks. The results show that relatively high (500--800 \kms) shock
velocities appear on the edge of the cone and outside of it. The model-inferred
AGN flux, which is lower than $10^{-11}$ photons cm$^{-2}$ s$^{-1}$ eV$^{-1}$
at the Lyman limit, is more typical of low-luminosity AGN, and less so for
Seyfert 2 galaxies. The preshock densities are characteristic of the ENLR and
range between 80--150 cm$^{-3}$. Nitrogen and sulphur are found depleted by a
factor lower than 2, particularly at the eastern edge. Oxygen is depleted at
several locations. The Fe/H ratio is approximately solar, whereas the Ne/H
relative abundance is unusually high, 1.5--2 times the solar value. Modelling
the continuum spectral energy distribution (SED), we have found radio
synchrotron radiation generated by the Fermi mechanism at the shock front,
whereas the X-rays are produced by the bremsstrahlung from a relatively high
temperature plasma.
