\begin{table}%T1 \caption{\label{tabobs}The stars with basic information, the J.D. of the observations, and the phase ranges covered.} \small%\centering \par \begin{tabular}{lrrrrrr} \hline \hline\noalign{\smallskip} Star & \object{CI And} & \object{SY Ari} & \object{AR Per} & \object{BR Tau} & \object{BH Aur} & \object{TZ Aur} \\ \hline RA & 01 55 08.29 & 02 17 34.04 & 04 17 17.19 & 04 34 42.89 & 05 12 04.26 & 07 11 35.01 \\ Dec & 43 45 56.47 & 21 42 59.26 & 47 24 00.63 & 21 46 21.72 & 33 57 46.95 & 40 46 37.13 \\ mean $y$; \ $E(B-V)$ \ [mag] & 11.86; 0.22&12.21; 0.25&9.40; 0.73&11.96; 0.31 & 11.43; 0.19 & 11.43; 0.19 \\ distance [pc]; \ [M/H] & 1741; $-$0.83 & 2100; $-1.4$:\tablefootmark{a} & 612; $-$0.43 & 1835; $-0.7$:\tablefootmark{a} & 1400; +0.14 & 1500; $-$0.79 \\ period [d] & 0.484728 & 0.5666815 & 0.425551 & 0.3905928 & 0.456089 & 0.39167479 \\ exp. time [s] $v,b,y$; $u,b,y$ & 40; 40 & 70; 70 & 20; 60 & 70; 210 & 70; 210 & 30; 30\\ start of observations & & & & & & \\ \hspace*{3mm}at JD = 2~453~370. & +5.2914 & +5.2947 & & & & +5.6153 \\ phase covered & 0.82 to 1.26 & 0.66 to 1.05 & & & & 0.67 to 0.95 \\ & +7.4215 & +7.2612 & & & & +6.4747 \\ & 1.21 to 1.43 & 0.13 to 0.65 & & & & 0.86 to 1.60 \\ & & +8.3353 & & & & +7.5535 \\ & & 1.03 to 1.16 & & & & 0.62 to 0.97 \\ & & +9.2568 & & & & +8.3106 \\ & & 0.65 to 0.91 & & & & 0.55 to .89 \\ \hspace*{3mm}at JD = 2~453~720. & +1.32 & & & +3.2969 & +1.2980 & \\ phase covered & 0.66 to 0.85 & & & 0.53 to 1.14 & 0.52 to 1.39 & \\ & & & & & +2.5868 & \\ & & & & & 0.34 to 0.54 & \\ \hspace*{3mm}at JD = 2~454~060. & & & +7.2981 & +7.5013 & & \\ phase covered & & & 0.75 to 1.63 & 0.73 to 0.87 & & \\ \hline\noalign{\smallskip} Star & \object{AA CMi} & \object{RR Gem} & \object{X CMi} & \object{TW Lyn} & \object{SZ Gem} & \object{AS Cnc} \\ \hline RA & 07 17 19.17 & 07 21 33.53 & 07 21 44.62 & 07 45 06.29 & 07 53 43.45 & 08 25 42.11 \\ Dec & 01 43 40.06 & 30 52 59.45 & 02 21 26.30 & 43 06 41.56 & 19 16 23.93 & 25 43 08.80 \\ mean $y$; $E(B-V)$ [mag]&11.13; 0.16&11.03; 0.22&12.23; 0.35&11.91; 0.16 & 11.45; 0.13 & 12.58; 0.16\\ distance [pc]; \ [M/H] & 1220; $-$0.15 & 1260; $-$0.29 & 1766; $-$0.71 & 1549; $-$0.66 & 1601; $-$1.46 & 2324; $-$1.89 \\ period [d] & 0.476327 & 0.397292 & 0.57138 & 0.481862 & 0.5011270 & 0.61752 \\ exp. time [s] $v,b,y$; $u,b,y$ & 40; 40 / 20; 60 & 20; 20 & 70; 70 & 40; 40 & 20; 20 & 40; 40 \\ start of observations & & & & & & \\ \hspace*{3mm}at JD = 2~453~370. & & +5.5257 & +8.6759 & +6.5937 & +5.5385 & +7.5695 \\ phase covered & & 0.98 to 1.49 & 1.08 to 1.17 & 1.16 to 1.51 & 0.39 to 0.77 & 0.73 to 1.05 \\ & & +6.4776 & +9.3641 & +7.2652 & +6.4800 & +8.4688 \\ & & 0.38 to 1.10 & 0.29 to 0.93 & 0.55 to 0.76 & 1.26 to 1.48 & 1.18 to 1.63 \\ & & +8.5121 & & +8.3421 & +7.6349 & +9.4268 \\ & & 0.50 to 0.88 & & 0.79 to 1.25 & 0.57 to 0.84 & 0.73 to 1.28 \\ & & & & +9.2625 & & \\ & & & & 0.70 to 0.76 & & \\ \hspace*{3mm}at JD = 2~453~720. & +2.4285 & & +1.5757 & & +1.5348 & +1.4625 \\ phase covered & 0.77 to 1.09 & & 1.21 to 1.32 & & 0.82 to 1.28 & 0.59 to 0.69 \\ \hspace*{3mm}at JD = 2~454~060. & +6.6066 & & +6.6110 & & & \\ phase covered & 1.02 to 1.32 & & 1.07 to 1.28 & & & \\ \hline \end{tabular} \tablefoot{\tablefoottext{a}{[M/H] (in logarithmic units) estimated from our $m_1$ (see Sect.~\ref{colourloops}).}} \end{table}