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Table 2

Data on observed and model binaries.

V209 V60 V228 V8
Parameter Obs. Mod.(1) Δ(o − m)* Obs. Mod.(2) Δ(o−m)* Obs. Mod.(3) Δ(o−m)∗ Obs. Mod.(4) Δ(o−m)*
Age (Gyr) 11.5 11.34 1.4% 12.3 10.13 17.6% 13.1 10.39 20.6% 11.8 11.58 1.9%
P (days) 0.834 0.834 0.0 1.183 1.183 0.0 1.151 1.151 0.0 0.315 0.315 0.0
M1/M⊙ 0.945 0.959 −1.5% 1.259 1.251 0.6% 1.512 1.509 0.2% 0.84 0.834 0.7%
M2/M⊙ 0.144 0.149 −3.3% 0.327 0.326 0.3% 0.200 0.197 1.5% 0.12 0.125 −4.2%
R1/R⊙ 0.983 0.998 −1.6% 1.102 0.994 9.8% 1.357 1.434 −5.7% 0.88 0.74 15.9%
R2/R⊙ 0.425 − − 1.480 1.497 −1.1% 1.238 1.246 −0.6% 0.45 0.45 0.0
log (L1/L⊙) 0.82 0.84 −0.02 0.68 0.77 −0.09 0.85 1.04 −0.19 0.21 −0.10 0.31
log (L2/L⊙) 0.35 − − 0.22 0.31 −0.09 0.20 0.15 0.05 −0.37 − −
log T1(K) 3.97 3.97 0.0 3.91 3.96 −0.05 3.91 3.94 −0.03 3.84 3.80 0.04
log T2(K) 4.04 − − 3.73 3.75 −0.02 3.76 3.75 0.01 3.85 − −

Notes. Mod.(1): computed model with Y = 0.40 and Z = 0.0004. Initial parameters: (M1,M2)init = (0.65,0.55)M⊙ and Pinit = 1.66 d; Mod.(2): PARSEC model with Y = 0.25 and Z = 0.0002. Initial parameters: (M1,M2)init = (0.87,0.86)M⊙ and Pinit = 2.045 d; Mod.(3): computed model with Y = 0.27 and Z = 0.003. Initial parameters: (M1,M2)init = (0.95,0.94)M⊙ and Pinit = 2.129 d; Mod.(4): PARSEC model with Y = 0.25 and Z = 0.0005. Initial parameters: (M1,M2)init = (0.85,0.19)M⊙ and Pinit = 3.715 d.

(*)

In the last four rows differences of logarithms are given.

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