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Table 2
Classification categories and corresponding conditions.
| Category | Flags | Condition 1 | Condition 2 | N spectra | Fraction |
|
|
|||||
| Nebular emission | N | 1148 | 13% | ||
| Single-component emission | E(N) | 990 | 11.2% | ||
| Emission blend (Ebl) | EE(N) |
|
1729 | 19.6% | |
| Sharp emission peaks (Esp) | EE(N) |
|
| v1 − v2 | <Ksp | 765 | 8.6% |
| Double emission (Edp) | EE(N) |
|
|
545 | 6.2% |
| P-Cygni (PCyg) | EA(N), AE(N) |
|
154 | 1.8% | |
| Inverted P-Cygni (IPCyg) | EA(N), AE(N) |
|
610 | 6.9% | |
| Self–absorption (Sabs) | EA(N), AE(N) |
|
σAbs < σ Em | 1253 | 14.2% |
| Emission in absorption (Eabs) | EA(N), AE(N) |
|
|
1652 | 18.7% |
|
|
|||||
| 8846 | 100% | ||||
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