\begin{table}%t2 \caption{\label{objtype}Number of sources in our data set with known object types or spectral types.} \par %\centering \par \begin{tabular}{l r r} \hline\hline \noalign{\smallskip} Object types / & \multicolumn{2}{c}{Data set} \\ Spectral types & AKARI-Hipparcos & AKARI-2MASS \\ \hline Be stars & 449 & 641 \\ Carbon stars & 281 & 4606 \\ M-type supergiants & 74 & 229 \\ M-type giants & 1732 & 3129 \\ OH/IR stars & 1 & 570 \\ Planetary Nebulae & 7 & 275 \\ Post-AGB stars & 42 & 242 \\ S-type stars & 74 & 1229 \\ Wolf-Rayet stars & 54 & 100 \\ Young stellar objects & 8 & 788 \\ Pre-main-sequence stars & 65 & 351 \\ \hline \end{tabular} \end{table}