The kinematical behavior of ORLs and CELs in PNe with [WC] central star
  In Planetary Nebulae (PNe) and HII regions ionic abundances can be derived by
using collisionally excited lines (CELs) or recombination lines (ORLs). Such
abundances do not coincide for the same ion and usually abundances from ORLs
are larger than those from CELs by factors of 2 or larger. The origin of the
discrepancy, known as the Abundance Discrepancy Factor is an open problem in
astrophysics of gaseous nebulae. It has been attributed to temperature
fluctuations in the plasma, tiny metal-rich inclusions embedded in the H-rich
plasma, gas inhomogeneities or other processes. In this work we analyze the
kinematical behavior of CELs and ORLs in two PNe ionized by [WC] stars, finding
that kinematics of ORLS is incompatible with the kinematics of CELs. In
particular the expansion velocities from CELs and ORLs for the same ion are
different, indicating that ORLs seem to be produced in zones nearer the central
star than CELs. This is in agreement with results found by other authors for
individual PNe.
