Fig. 1

Dependence of the warm dust temperature Twd on the oxygen abundance 12 + logO/H in ~1000 galaxies from the SDSS sample. Temperatures are calculated from the WISE fluxes at 12 μm and 22 μm for galaxies with EW(Hβ) ≥ 50 Å (red filled circles) and EW(Hβ) < 50 Å (blue filled circles). The solid line corresponds to average Twd.
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