Table 2
Photometric and morphometric selection criteria adopted.
| Quantity | Passband | Range adopted |
|---|---|---|
| for selection | ||
| ΔX6−12 (mag) | All | ≥0.075 |
| CLASS_STAR | u | ≤0.8 |
| CLASS_STAR | g | ≤0.7 |
| CLASS_STAR | r | ≤0.95 |
| CLASS_STAR | i | ≤0.95 |
| PSF FWHM (pixels) | u | ≥4.5 |
| PSF FWHM (pixels) | g | ≥4.1 & <15 |
| PSF FWHM (pixels) | r | ≥4.25 & <15 |
| PSF FWHM (pixels) | i | ≥3.9 & <15 |
| Flux Radius (pixels) | u | ≥3.2 & <10 |
| Flux Radius (pixels) | g | ≥3 & <10 |
| Flux Radius (pixels) | r | ≥3 & <10 |
| Flux Radius (pixels) | i | ≥2.5 & <15 |
| Axis Ratio b∕a | All | ≥0.67 |
| Δ mag | All | ≤0.25 |
| mbright-mfaint (mag) | u | 18–25 |
| mbright-mfaint (mag) | r | 16.5–23.5 |
| mbright-mfaint (mag) | g | 16–23 |
| mbright-mfaint (mag) | i | 16–23 |
Explanation of listed parameters. ΔX6−12: threshold for the magnitude concentration index. SExtractor parameters: CLASS_STAR: Neural-Network-based star/galaxy classifier; PSF FWHM: point spread function full width at half maximum; Flux Radius: half light radius; axis-ratio: semi-minor over semi-major axis ratio (see Bertin & Arnouts 1996, and references therein for more details). Other selection parameters. Δ mag: maximum error on magnitude; mbright-mfaint bright and faint magnitude cuts (see text).
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