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Table 2.
Overview of predictions for a selection of proposed models and the observations we used to test them.
| Measurement | Age sequence | Merger-driven | RSFG prediction | Observation |
|---|---|---|---|---|
| prediction | mechanisms | |||
| prediction | ||||
| Emission line | Decrease towards | Decrease towards | Weak in Group 3 | Decrease towards |
| strengths | Group 3 | Group 3 | Group 3 | |
| Mass distribution | Similar | Group 1–2 like SFGs, | Could be dissimilar | Groups 1–2 similar, |
| Group 3 like QGs | Group 3 different | |||
| Age distribution | Increase towards | Higher in Group 3 | Could be similar | Similar |
| Group 3 | ||||
| Extinction | Decrease towards | Similar | ||
| Group 3 | ||||
| SFR | Decrease towards | Low in Group 3 | Decrease | |
| Group 3 | towards Group 3 | |||
| Asymmetry | Decrease towards | Lower in Group 3 | Low in Group 3 | Lower in Group 3 |
| Group 3 |
Notes. The green, yellow, and red cells indicates that the model is either consistent, weakly (in)consistent, or inconsistent with the observations, respectively.
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