\begin{table}%T4
\caption{\label{tbl:decomp}Spectral decomposition of the binary pulsators from the SDSS sample.}
\small%\centering
\par
\begin{tabular}{lcccclcccccccc} 
\hline\hline\noalign{\smallskip}
     & \multicolumn{4}{c}{Companion signature} &       & \multicolumn{4}{c}{Primary} & \multicolumn{4}{c}{Secondary} \\
Name                  & \ion{Ca}{ii} & CH & \ion{Mg}{i} & \ion{Na}{i} & $E(B-V)$& $f_{5000}$ & \teff & \logg & \logy &
                               $f_{5000}$ & \teff & \logg & [M/H] \\ 
                      & H+K & G &  b & D & mag & & kK & dex & & & kK & dex & \\ \hline\\[-2.5mm]
\object{J1717+5805} & \chk &      & \chk & \chk & 0.025 & 0.90 & 34.4 & 5.75 & $-$1.8 & 0.10 & 5.0 & 4.0 & +0.0 \\
\object{PG~1657+416}   & \chk & \chk & \chk & \chk & 0.021 & 0.74 & 32.2 & 5.80 & $-$2.0 & 0.25 & 5.5 & 4.0 & +0.0 \\
\object{PG~1419+081}   & \chk & \chk & \chk & \chk & 0.028 & 0.86 & 33.3 & 5.85 & $-$1.8 & 0.14 & 5.5 & 4.0 & +0.0 \\
\object{J1445+0002}     & \chk &      & \chk & \chk & 0.11  & 0.83 & 35.9 & 5.75 & $-$1.6 & 0.17 & 6.0 & 4.0 & +0.0 \\
\object{J1642+4552}     & \chk & \chk & \chk & \chk & 0.011 & 0.53 & 32.4 & 5.80 & $-$2.0 & 0.47 & 6.0 & 4.0 & $-$1.5 \\
\hline
\end{tabular}
\end{table}