A Systematic Survey for z < 0.04 Changing-Look AGNs
  We have conducted a systematic survey for z $<$ 0.04 active Galactic nuclei
(AGNs) that may have changed spectral class over the past decade. We use
SkyMapper, Pan-STARRS and the V\'eron-Cetty & V\'eron (2010) catalogue to
search the entire sky for these ``changing-look'' AGNs using a variety of
selection methods, where Pan-STARRS has a coverage of 3$\pi$ steradians (sky
north of Declination $-30^\circ$) and SkyMapper has coverage of $\sim$
21,000$~\rm{deg^2}$ (sky south of Declination $0^\circ$). We use small aperture
photometry to measure how colour and flux have changed over time, where a
change may indicate a change in spectral type. Optical colour and flux are used
as a proxy for changing H$\alpha$ equivalent width, while WISE 3.4 $\mu$m flux
is used to look for changes in the hot dust component. We have identified four
AGNs with varying spectra selected using our optical colour selection method.
Three AGNs were confirmed from recent observations with WiFeS on the 2.3 m
telescope at Siding Spring and the other was identified from archival spectra
alone. From this, we identify two new changing look AGNs; NGC 1346 and 2MASX
J20075129-1108346. We also recover Mrk 915 and Mrk 609, which are known to have
varying spectra in the literature, but they do not meet our specific criteria
for changing look AGNs.
