Fig. 7.
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Positions of 1347 SDSS X-ray selected galaxies on X-ray versus Hα luminosities plane. X-ray luminosity is in the range 0.2–12 keV and in erg s−1, Hα luminosity is in erg s−1. Type of ionisation (AGNs, Composite, SF) corresponds to the position of X-ray galaxy on [OIII]/Hβ versus [NII]/Hα BPT diagram. AGNs are marked with blue circles, Composites - with orange crosses, and SF – with green squares.
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