Table 1.
Young α-rich stars in different Galactic regions.
| Rg (kpc) | TOT | HA | YAR | fTOT | fHA |
|---|---|---|---|---|---|
| < 5 | 419 (284) | 296 (202) | 23 (18) | 5.6 % (6.3 %) |
7.8 % (8.9 %) |
| 5–7 | 1943 (1630) | 1208 (981) | 81 (106) | 4.2 % (6.5 %) |
6.7 % (10.8 %) |
| 7–8 | 1326 (1194) | 444 (374) | 26 (38) | 2.0 % (3.2 %) |
5.9 % (10.2 %) |
| 8–10 | 2347 (2096) | 469 (389) | 28 (34) | 1.2 % (1.6 %) |
6.0 % (8.7 %) |
| > 10 | 838 (681) | 111 (66) | 10 (10) | 1.2 % (1.5 %) |
9.0 % (15.2 %) |
| |Z| (kpc) | TOT | HA | YAR | fTOT | fHA |
| < 0.5 | 1759 (1646) | 195 (178) | 18 (23) | 1.0 % (1.4 %) |
9.2 % (12.9 %) |
| 0.5–1 | 2573 (2318) | 670 (595) | 35 (58) | 1.4 % (2.5 %) |
5.2 % (9.7 %) |
| > 1 | 2541 (1921) | 1663 (1239) | 115 (125) | 4.5 % (6.5 %) |
6.9 % (10.0 %) |
Notes. Listed are the following: first column, the considered range in guiding radius Rg (in kpc) and Galactic height |Z| (in kpc); second, third, and fourth columns, the corresponding total number of stars, high-α (HA) stars, and young α-rich (YAR) stars, respectively; fifth and sixth columns, the fraction of young α-rich stars with respect to the total of stars and with respect to the high-α sequence, respectively. Our results are listed for ages computed with (νmax, L) and, in parentheses, with (νmax, Δν).
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