A New Population of Planetary Nebulae Discovered in the Large Magellanic
  Cloud (IV): The Outer LMC
  We have extended our PNe survey to the outer ~64deg^2 of the LMC using maps
from the Magellanic Cloud Emission Line Survey (MCELS) and the UK Schmidt
Telescope (UKST) H-alpha survey. Although the MCELS survey has poorer ~5
arcsecond resolution than both the UKST H-alpha survey and the original H-alpha
median stacked map in the LMC's central 25deg^2, it has the advantage of
additional narrow-band filters at H-alpha, [OIII] and [SII] providing improved
diagnostic capabilities. Using these data to uncover new emission line
candidates we have so far spectroscopically confirmed an extra 61 LMC PNe which
we present here for the first time. We have also independently recovered and
spectroscopically confirmed 107 of the 109 (98%) PNe that were previously known
to exist in the outer LMC. The majority of our newly discovered and previously
known PNe were confirmed using the AAOmega, multi-object fibre spectroscopy
system on the 3.9-m Anglo-Australian Telescope (AAT) and the 6dF multi-object
spectrograph on the UKST. These newly identified PNe were cross-checked against
extant multi-wavelength imaging surveys in the near and mid-infrared in
particular and against the latest emission-line ratio diagnostic plots for
improved confidence in PNe identification.
