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Thirty years ago the optical counterpart of the x-ray source 1H0707-495 wasdiscovered to be a 15th magnitude broad-line Seyfert galaxy with a rich Fe IIemission line spectrum typical of the AGN subclass sometimes referred to as theI Zw 1 objects after their progenitor. This object became the subject of muchinterest and investigation just over five years ago when it was shown to haveundergone dramatic x-ray luminosity variations. This paper presents anextensive series of medium resolution spectra recorded at the 1.9 m telescopeat Sutherland in January 2016. Through co-adding the spectra, we are able toachieve a signal-to-noise hitherto not achieved for this object, allowing us toresolve individual Fe II lines and measure their relative strengths andprofiles to a degree of accuracy not previously available for this AGN. Weprovide possible physical interpretations of our measurements and investigatelinks between the spectral evidence collected in this study and the known x-raybehaviour.

Analysis of the rich optical iron-line spectrum of the x-ray variable I Zw 1 AGN 1H0707-495