\begin{table}%t5 \caption{\label{table:IRACdata}Spitzer PSF photometry and photometric errors of the three T-dwarf candidates.} %\centerline {\begin{tabular}{l l l l l l l l l} \hline\hline Object & $F{[3.6]}$/mJy & $F{[3.6]}$\_error & $F{[4.5]}$/mJy & $F{[4.5]}$\_error & [3.6]/mag & [3.6]\_error & [4.5]/mag & [4.5]\_error \\ \hline \object{IC348\_CH4\_1} & 0.0035 & 0.0001 & -- & -- & 19.75 & 0.03 & -- & -- \\ \object{IC348\_CH4\_2} & 0.0093 & 0.0003 & 0.0136 & 0.0004 & 18.70 & 0.03 & 17.80 & 0.03\\ \object{IC348\_CH4\_3} & 0.0245 & 0.0003 & 0.0365 & 0.0007 & 17.65 & 0.02 & 16.73 & 0.02\\ \hline \end{tabular}}\medskip \par IC348\_CH4\_1 appeared outside the FOV in the $[4.5]~\mu$m image. \end{table}