Image Details
 
                    Caption: Figure 3.
Keck/LRIS rest-frame spectrum (selected parts) of the transient's host galaxy with the major emission lines marked. From the line positions, we find a redshift of z = 0.1907. To derive the metallicity, we measured the fluxes of the [O ii] 3727 Å, [O iii] 4363 Å, [O iii] 4959 Å, [O iii] 5007 Å, and Hβ 4861 Å lines.
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