Table 1: Stellar properties of the components of HD 219542.
Parameter HD 219542 A HD 219542 B Ref.
$\alpha$ (2000) 23 16 35.24 23 16 35.42 1
$\delta$ (2000) -01 35 11.5 -01 35 07.0 1
$\mu_{\alpha}$ (mas yr-1) 163.28 $\pm$ 2.12 163.28 $\pm$ 2.12 1
$\mu_{\delta}$ (mas yr-1) 20.97 $\pm$ 1.52 20.97 $\pm$ 1.52 1
RV (km s-1) -11.1 $\pm$ 0.2 -10.0 $\pm$ 0.2 2
$\pi$ (mas) 18.30 $\pm$ 1.97 1
d (pc) 54.6 $\pm$ 5.9 1
U (km s-1) -40.5 $\pm$ 4.8 2
V (km s-1) -16.4 $\pm$ 3.6 2
W (km s-1) -4.0 $\pm$ 2.5 2
VT 8.172 $\pm$ 0.019 8.591 $\pm$ 0.028 3
(B-V)T 0.705 $\pm$ 0.029 0.791 $\pm$ 0.044 3
V 8.198 $\pm$ 0.021 8.589 $\pm$ 0.021 4
V-I 0.641 $\pm$ 0.035 0.705 $\pm$ 0.037 4
$H_{\rm p}$ 8.312 $\pm$ 0.006 8.689 $\pm$ 0.008 1
$H_{\rm p}$ scatter 0.011a,b 1
J 6.992 $\pm$ 0.023 7.216 $\pm$ 0.033 5
H 6.726 $\pm$ 0.039 6.896 $\pm$ 0.045 5
K 6.627 $\pm$ 0.033 6.830 $\pm$ 0.045 5
b-y 0.405a $\pm$ 0.006 6
m1 0.214a $\pm$ 0.009 6
c1 0.367a $\pm$ 0.004 6
ST G2V G7V 7
MV 4.48 $\pm$ 0.23 4.90 $\pm$ 0.23 8
$T_{{\rm eff}}$ (K) 5989 $\pm$ 50 5713 $\pm$ 50 8
$\Delta T_{{\rm eff}}~(A-B)$ (K) 276 $\pm$ 14 8
$\log g$ 4.37 $\pm$ 0.10 4.38 $\pm$ 0.10 8
$\log R^{'}_{HK}$ -5.36 $\pm$ 0.13 -5.11 $\pm$ 0.13 2
$ v \sin i $ (km s-1) 1.9 $\pm$ 0.1 2.4 $\pm$ 0.1 2
$ v_{\rm mac} $ (km s-1) 4.4 $\pm$ 0.3 4.8 $\pm$ 0.3 2
$L_{\rm X}$ (erg s-1) 2.1+1.8-1.2 1028 a 2
${\rm [Fe/H]}$ +0.29 $\pm$ 0.10 +0.20 $\pm$ 0.10 8
$\Delta {\rm [Fe/H]}(A-B)$ 0.091 $\pm$ 0.009 8
$\log N_{{\rm Li}}$ 2.35 <1.0 8
${\rm Mass}~(M_{\odot})$ 1.13 $\pm$ 0.05 1.06 $\pm$ 0.05 2
${\rm Radius}~(R_{\odot})$ 1.05 0.96 2
Age (Gyr) $\sim $2 2
References: 1 Hipparcos (ESA 1997); 2 This paper; 3 Tycho (ESA 1997); 4 Cuypers & Seggewiss (1999);
5 2MASS; 6 Olsen (1998); 7 Corbally & Garrison (1980); 8 Paper I.
a A+B.
b See Sect. 6.2 for details.

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