Fig. 1
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BPT diagram of the sample of spectra of Galactic and extragalactic H II regions and SFGs compiled in DESIRED-E. The dashed line represents the empirical relation by Kauffmann et al. (2003) that distinguishes between star-forming regions and AGNs. The dotted vertical and horizontal lines represent additional filters applied by Amayo et al. (2021) to photoionisation models to construct their set of ICFs.
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