Fig. 15
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Comparison of supernova remnant properties with MAPPINGS models. Left: Observed [O III]λ5006/Hβ versus [N II]λ6583/Hα for SNRs (red dots). Right: Observed [N II]λ6583/Hα versus [S II]/Hα for SNRs (red dots). For SNRs that overlap with a H II region, the symbol is an empty light red circle. Background grids are MAPPINGS models with different metallicities. Our identified SNRs mostly lie between models for LMC and twice solar metallicities.
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