Fig. 2.
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Comparison between different metallicity calibrators: P01 (left panel) and Z94 (right panel) vs. T04 for VIPERS (blue) and SDSS (orange) samples. We show the y = x line (dashed red line), our conversion polynomial from one calibrator to another (solid black line), and the conversion polynomial used by Kewley & Ellison (2008) to convert T04 into Z94 (dash-dotted green line).
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