More than 60% of double-peaked narrow emission lines possibly not related to dual galaxy systems

Open Access

Fig. 1.

Correlations between R_R and R_B for the SDSS objects with apparent DPNELs in the five groups. In each panel, the solid red line and the dashed red lines show the best-fitting results and the corresponding 3σ confidence bands. In each panel, the open red circles mark the galaxies with larger R_ps.

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