Table 1.
Selection criteria for double-peaked emission line galaxies.
| Criterion | # of galaxies | |
|---|---|---|
| Stage 1 | S/N(Hα) or S/N([OIII]) > 10 | 276 239 |
| At least three lines with S/N > 5 | 189 152 | |
| Unlikely Gaussian shape | 99 740 | |
| Flag for DP in the stacked spectrum | 7479 | |
| Stage 2 | Flag for DP on individual lines | 7479 |
| Stage 3 | Flag for DP on strongest S/N line | 5663 |
Notes. Summary of the automated selection procedure used to select SDSS double-peaked emission line galaxies. We give the different criteria at every stage, with the corresponding number of selected galaxies. The details are those given in the flowcharts in Maschmann et al. (2020).
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