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Table 1

Number of short-period planets accessible to high-contrast characterization.

Planet size, RP/R Equilibrium temperature, Teq/K
Simulation parameters 1–2 2–4 4–8 <200 200–300 >300 N EVA a Totalb

Baseline scenario (see Sect. 3.1): 1 ± 1 4 ± 2 0.06 8 ± 3
Effects of astrophysical parameters (see Sect. 3.2):
Many small planets (f1−2 R = 4f2−4 R) 4 ± 2 0.24
More longer-period planets (for P > 50 d) 1 ± 1 5 ± 2 4 ± 2 4 ± 2 0.06
No planets around cool stars (Teff < 3600 K) 1 ± 1 3 ± 2 1 ± 1 1 ± 1 zero 5 ± 2
RV statistics for cool stars (Teff < 3600 K) 1 ± 1 2 ± 1 0.05 8 ± 3
Effects of instrumental parameters (see Sect. 3.3):
Larger diameter (39 m) 9 ± 3 4 ± 2 4 ± 2 0.14 15 ± 4
Smaller diameter (25 m) 1 ± 1 1 ± 1 0.04 5 ± 2
Much smaller diameter (8 m) 0 0 0 0 zero
Narrower IWA (2 λ/D) 0.07
Wider IWA (4 λ/D) 1 ± 1 0.06
Shorter wavelength (1.0 μm) 1 ± 1 5 ± 2 0.05 9 ± 3
Longer wavelength (1.6 μm) 1 ± 1 4 ± 2 1 ± 1 0.08 7 ± 3
Longer wavelength (2.2 μm) 1 ± 1 1 ± 1 0.05 5 ± 2
Longer wavelength (3.5 μm) 1 ± 1 zero
Thermal IR, larger diameter (10 μm, 39 m, 10-7) 3 ± 2 1 ± 1 3 ± 2 1 ± 1 1 ± 1 0.41

Notes. 

(a)

Expected number of accessible Earth/Venus analogues (RP = 1−2R, Teq = 200−250 K), assuming planets with RP = 1−2 R and 2−4 R occur with the same frequency (see Sects. 2.2 and 3.2).

(b)

Because of rounding, the sum of each row’s values may not match the total value listed.

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