Table 1.
Number of simulated BD detections from Gaia astrometry, radial velocity, and photometric transits.
| Magnitude | Astro | RV | 5-yr nominal |
10-yr extended |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| selection | Δχ2 | Δχ2 | Pdistr = Ma & Ge | Pdistr = Díaz | Pdistr = Ma & Ge | Pdistr = Díaz | ||||
| – | – | – | 780 000 | (1100: 4.5) | 780 000 | (720: 4.4) | 780 000 | (2300: 5.9) | 780 000 | (1400: 5.8) |
| – | > 30 | – | 41 000 | (3: 4.5) | 50 000 | (4: 3.0) | 64 000 | (12: 3.9) | 77 000 | (6: 3.5) |
| – | > 50 | – | 28 000 | (1: 4.9) | 34 000 | (3: 3.0) | 45 000 | (6: 3.7) | 55 000 | (4: 3.4) |
| – | > 100 | – | 17 000 | (1: 3.3) | 21 000 | (2: 3.0) | 28 000 | (3: 3.7) | 35 000 | (2: 3.4) |
| GRVS < 12 | – | – | 12 000 | (53: 4.8) | 12 000 | (34: 4.8) | 12 000 | (94: 6.7) | 12 000 | (60: 6.5) |
| GRVS < 12 | > 30 | – | 6200 | (1: 3.9) | 7100 | (1: 3.6) | 7300 | (6: 4.4) | 8100 | (5: 4.3) |
| GRVS < 12 | > 50 | – | 5300 | (1: 3.9) | 6100 | (1: 3.7) | 6500 | (4: 4.3) | 7300 | (3: 4.1) |
| GRVS < 12 | > 100 | – | 4300 | (0) | 5000 | (0) | 5400 | (2: 4.1) | 6200 | (2: 4.0) |
| GRVS < 12 | – | > 30 | 1700 | (32: 4.9) | 1300 | (20: 4.9) | 2700 | (64: 7.0) | 2200 | (40: 6.8) |
| GRVS < 12 | – | > 50 | 1100 | (27: 5.0) | 830 | (17: 4.9) | 1900 | (56: 7.0) | 1500 | (35: 6.9) |
| GRVS < 12 | – | > 100 | 570 | (21: 5.1) | 410 | (13: 5.0) | 1100 | (46: 7.1) | 810 | (29: 7.0) |
| GRVS < 12 | > 30 | > 30 | 810 | (1: 3.9) | 750 | (1: 3.7) | 1600 | (6: 4.5) | 1500 | (4: 4.4) |
| GRVS < 12 | > 50 | > 50 | 410 | (1: 4.0) | 370 | (0) | 950 | (3: 4.4) | 870 | (2: 4.3) |
| GRVS < 12 | > 100 | > 100 | 140 | (0) | 120 | (0) | 400 | (1: 4.3) | 360 | (1: 4.2) |
Notes. The number of detected BDs for a given Δχ2 detection threshold(s) with the number of host stars with ≥3 photometric transits (S/N > 3) in Gaia data given in parentheses together with their mean number of transits. The two period distributions Pdistr ‘Ma & Ge’ and ‘Díaz’ are detailed in Sect. 3.2 (Fig. 2). All counts could be up to 50% higher or lower due to the uncertainty on the assumed 0.6% BD occurrence rate (see Sect. 3.1).
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