\begin{table}%tA.5
 \caption{All wTTS in the comparison sample. They have been known prior to the ROSAT All-Sky Survey. The table lists the rotational period together with the classification of the object. All objects are weak-line TTS, wb~stands for binarity, wt~for triple system, wsb is a~double-lined spectroscopic binary. The last column states if the object was detected with the Einstein observatory (marked with~X) and is therefore X-ray selected like the stars found by~ROSAT.}\label{tab:vglobjekte}
%\centerline
{ 
\begin{tabular}{lllll}
\hline\hline
Name of the object & Type & Period $P$ & Source &EO\\\hline
 L1551-51              & w   &1.21        &1&X\\
 LkCa 4                & w   &3.37        &1, 4&\\
 NTTS 043124+1824      & w   &3.32        &4&X\\
HD 283572              & w   &1.55        &3&X\\
IP Tau                 & w   &3.25        &1&\\
L1551-55               & w   &6.20        &4&X\\
LkCa 14                & w   &3.35        &3&\\
LkCa 19                & w   &2.24        &1, 4&\\
LkCa 3                 & w   &7.20        &3&\\
NTTS 034903+2431       & w   &1.60        &1&X\\
NTTS 041559+1716       & w   &2.58        &3&X\\
NTTS 042417+1744       & w   &2.70        &4&X\\
NTTS 042835+1700       & w   &3.38        &1&X\\
NTTS 043220+1815       & w   &3.20        &4&X\\
V827 Tau               & w   &3.75        &5&X\\
V830 Tau               & w   &2.75        &5&X\\
V836 Tau               & w   &7.00        &6&X\\
 DI Tau                & wb  &7.50        &1&\\
 VY Tau                & wb  &5.37        &7&\\
IW Tau                 & wb  &5.60        &1&\\
LkCa 7                 & wb  &5.64        &1&\\
V410 Tau               & wb  &1.8714      &8&\\
V819 Tau               & wb  &5.60        &6&X\\
V826 Tau               & wb  &3.70        &5&X\\
NTTS 045251+3016       & wsb &4.70        &1&X\\
CoKu HP Tau/G2         & wt  &1.20        &2& \\
HP Tau                 & wt  &5.90        &3&\\
UX Tau A               & wt  &2.70        &5&\\\hline
\end{tabular}}
\medskip
Sources: (1)~\citet{1993AA...272..176B};
(2)~\citet{1989AJ.....97..483V}; 
(3)~\citet{1995AA...299...89B};
(4)~\citet{1993IBVS.3823....1G}; 
(5)~\citet{1986AA...165..110B}; 
(6)~\citet{1984AJ.....89.1015R}; 
(7)~\citet{1991IBVS.3658....1G}; 
(8)~\citet{1989AJ.....98.2268H}.
\end{table}