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Superluminous supernova progenitors have a half-solar metallicity threshold

Chen et al. 2016 Figure 7. The metallicity – offset relation for SLSN Type I host galaxies from the Lunnan et al. (2014, 2015) sample. Hosts with known metallic- ities (filled red symbols) and with metallicities predicted from the mass- metallicity relation (empty red symbols) are shown. There is a correlation between the reported host…


The lowest metallicity host ever found for SLSNe!