Fig. 1
a) BPT diagram, and b) Veilleux & Osterbrock classification diagram of the neighbours of Sy1 and Sy2 galaxies. The neighbours of Sy2 and Sy1 galaxies are indicated by black triangles and red squares, respectively. For clarity, only the errorbars for those galaxies with the largest uncertainties in the [OIII]/Hβ ratio are presented in the diagrams.
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