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Fig. 12.
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Distribution of SDSS X-ray-selected galaxies Left: galaxies with S/N > 30 on the [SII] version of the BPT diagram (Baldwin et al. 1981). Compared to Fig. 6, the contribution of composite-type galaxies increases. The colour bar represents the X-ray/Hα flux ratio. Right: PDF of log(X-ray/Hα) for S/N 3 and 10, respectively.
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