Table A.1: Binary parameters derived from the radial velocities (RVs) of $\nu$ Gem (Fig. A.5) and $\epsilon$ Cap (Fig. A.14) by means of V ELOC (Schmutz, unpublished, e.g. used also by Schmutz et al. 1997) and F OTEL (Hadrava 2002). Since the eccentricity is zero for $\epsilon$ Cap, T₀ denotes the time of maximal RV. The V ELOC and F OTEL solutions agree very well within their errors.
Star $\gamma$ K P T₀ $\phi$ e code

[ $\rm km~ s^{-1}$ ] [ $\rm km~ s^{-1}$ ] [d] JD $^\circ$

$\epsilon$ Cap -8.9 8.7 128.5 51 030 - 0.00 V ELOC

$\epsilon$ Cap $-9.2\pm0.2$ $8.8\pm0.3$ $128.3\pm0.2$ $51~029.1\pm0.6$ - 0.00 F OTEL

$\nu$ Gem 34.4 37.6 53.733 51 005 316 0.11 V ELOC

$\nu$ Gem $34.5\pm1.1$ $38\pm8$ $53.731\pm.017$ $51~004.7\pm4.2$ $315\pm29$ $0.11\pm0.05$ F OTEL

**Table A.1:** Binary parameters derived from the radial velocities (RVs) of $\nu$ Gem (Fig. A.5) and $\epsilon$ Cap (Fig. A.14) by means of V ELOC (Schmutz, unpublished, e.g. used also by Schmutz et al. 1997) and F OTEL (Hadrava 2002). Since the eccentricity is zero for $\epsilon$ Cap, T₀ denotes the time of maximal RV. The V ELOC and F OTEL solutions agree very well within their errors.
Star	$\gamma$	K	P	T₀	$\phi$	e	code
	[ $\rm km~ s^{-1}$ ]	[ $\rm km~ s^{-1}$ ]	[d]	JD	$^\circ$
$\epsilon$ Cap	-8.9	8.7	128.5	51 030	-	0.00	V ELOC
$\epsilon$ Cap	$-9.2\pm0.2$	$8.8\pm0.3$	$128.3\pm0.2$	$51~029.1\pm0.6$	-	0.00	F OTEL
$\nu$ Gem	34.4	37.6	53.733	51 005	316	0.11	V ELOC
$\nu$ Gem	$34.5\pm1.1$	$38\pm8$	$53.731\pm.017$	$51~004.7\pm4.2$	$315\pm29$	$0.11\pm0.05$	F OTEL

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