Table 1.
Changing-look identifier thresholds.
| Detection strength | Continuum | Peak emission line flux | |
|---|---|---|---|
| (10−17 erg s−1 | (10−17 erg s−1 cm−2) | ||
| cm−2Å−2) | Hα | Hβ | |
| Strong | > − 2 × 10−2 | > 3.5 | > 5.25 |
| Intermediate | > − 1.8 × 10−3 | > 1.8 | > 2.7 |
| Weak | > − 6 × 10−4 | > 0.8 | > 1.2 |
Notes. Continuum refers to the mean slope of the continuum in the rest wavelength range 3500 to 3700 Å. Objects were selected by our algorithm for manual review if they displayed at least one strong CLQ feature and one weak CLQ feature. Objects that displayed only one CLQ feature are discarded. Objects with two intermediate strength features were also selected for manual review.
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