IRX–β plane for Seyfert galaxies. The data by Barišić et al. (2017) are shown (black squares), along with their 1σ errors, superimposed on the sample of Seyfert galaxies by García-González et al. (2016 magenta crosses). For comparison, the theoretical IRX-to-β relation by Meurer et al. (1999) with βint = −2.23 (solid line) and the relation by Pettini et al. (1998) with βint = −2 (dashed line) are also reported.
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