Table 1.
AGB star distribution in M31.
| F160W | > 18 | 17.5 − 18 | 17 − 17.5 | 16.5 − 17 | < 16.5 |
|---|---|---|---|---|---|
| % (G22) | 49.0 | 36.8 | 11.9 | 1.9 | 0.4 |
| % (sint) | 49.6 | 36.7 | 12.0 | 1.4 | 0.5 |
| Age | 6–14 Gyr | 600 Myr–6 Gyr | 600 Myr–4 Gyr | 200–300 Myr | < 200 Myr |
| Mass | 0.8–1.2 M⊙ | 1.2–3 M⊙ | 1.3–3 M⊙ | 3–3.5 M⊙ | ≥ 4 M⊙ |
| % (C-stars) | – | 10% | 20% | 30% | – |
| DPR | – | < 2 × 10−8 M⊙/yr | < 10−8 M⊙/yr | < 2 × 10−8 M⊙/yr | < 10−8 M⊙/yr |
Notes. Characterization of the AGB stars in M31 that populate the different F160W bins in the (F110W−F160W, F160W) plane. The symbol ‘% (G22)’ indicates the percentage of stars belonging to the G22 sample, ‘% (sint)’ indicates the percentage of stars predicted by population synthesis, and ‘% (C-stars)’ indicates the fraction of carbon stars predicted by population synthesis in each F160W bin.
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