Fig. 8
Top left panel: cumulative distribution functions (CDFs) of the central metallicities for SN IIn, Ibn, and SN IM host galaxies. SN Ibn and SN IM hosts show slightly lower metallicities than SN IIn hosts. Top right panel: CDFs of the metallicity at the SN location for the same three classes. SN IMs and SNe Ibn are located in lower metallicity environments than those of SNe IIn. Bottom panels: CDFs of the host metallicity gradients and deprojected SN distances from the host center for SNe IIn, Ibn, and SN IMs.
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