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Table 3

System parameters for XO-2b from individual light curve fits.

Parameter Value

central wavelength, λ (Å) 6792.0 7582.0 7664.9 8839.0
wavelength range, Δλ(Å) 12 12 12 12
planet/star radius contrast, R = Rpl/R 0.1043  ±  0.0021 0.1067  ±  0.0015 0.1083  ±  0.0017 0.1032  ±  0.0012
inclination, i [deg] 88.4  ±  1.8 87.23  ±  0.99 86.09  ±  0.79 88.5  ±  1.9
impact parameter, b = acosi/R 0.23  ±  0.25 0.37  ±  0.13 0.49  ±  0.10 0.21  ±  0.21
system scale, a/R 8.14  ±  0.43 7.69  ±  0.36 7.20  ±  0.32 8.05  ±  0.35
stellar density, ρ [g cm-3] 1.49  ±  0.25 1.26  ±  0.17 1.03  ±  0.14 1.44  ±  0.24
linear limb-darkening coeff., c2 1.3943  ±  0.048 1.412  ±  0.053 1.491  ±  0.061 1.448  ±  0.043

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