Table B.1.
Timescales of the two infall models for the M31 2 ≤ RGC ≤ 14 kpc region.
| t1 | t2 | t3 | τi, 1 = τi, 2 | τs, 1 | τs, 2 | τo, 1 = τo, 2 | |
|---|---|---|---|---|---|---|---|
| fiducial model | 3 | 9 | 12 | 5 | 1 | 1 | 4 |
| weaker 1st SF | 2 | 9 | - | 5 | 5 | 1 | 3 |
| outer disc | - | - | - | 1 | 1 | - | - |
Notes. Summary of the timescales of the two infall models. The units are in Gyr. The timescales are: the timescales of the infall (τi), that of star formation (τs), and outflow (if there is, τo). The table lists three epochs that identify the truncation of the first infall (at t1), the onset of the second infall (at t2), and the truncation of the second infall (at t3), also. See Appendix B for more details.
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