Analysis of the rich optical iron-line spectrum of the x-ray variable I
  Zw 1 AGN 1H0707-495
  Thirty years ago the optical counterpart of the x-ray source 1H0707-495 was
discovered to be a 15th magnitude broad-line Seyfert galaxy with a rich Fe II
emission line spectrum typical of the AGN subclass sometimes referred to as the
I Zw 1 objects after their progenitor. This object became the subject of much
interest and investigation just over five years ago when it was shown to have
undergone dramatic x-ray luminosity variations. This paper presents an
extensive series of medium resolution spectra recorded at the 1.9 m telescope
at Sutherland in January 2016. Through co-adding the spectra, we are able to
achieve a signal-to-noise hitherto not achieved for this object, allowing us to
resolve individual Fe II lines and measure their relative strengths and
profiles to a degree of accuracy not previously available for this AGN. We
provide possible physical interpretations of our measurements and investigate
links between the spectral evidence collected in this study and the known x-ray
behaviour.
