\begin{table}%t1 %%\centering \par \caption{\label{spc_class}Coordinates, LIRIS photometry and spectral classification of the selected objects within NGC~7538. } \par \begin{tabular}{c l l l c c c c c c c} \hline\hline %MOS Nr & Name & ID & RA~(J2000) & Dec~(J2000) & $J$ & $H$ & $K_{\rm s}$ & $A_{\rm V}$(mag) & Class. & ST & Notes \\ & & & & & & & & & & \\ \hline IRS~6 & & 23 13 34.3 & +61 30 14.3 & 8.71 $\pm$ 0.02\tablefootmark{\dag} & 8.21 $\pm$ 0.04$^{\dag}$ & 8.00 $\pm$ 0.01$^{\dag}$ & 5.4~$\pm$~0.4& & O3$\pm$1V & O9~$\pm$~1V\tablefootmark{\ddag} \\ IRS~5 & & 23 13 30.3 & +61 30 11.6 & 10.38~$\pm$~0.03$^{\dag}$ & 9.82~$\pm$~0.04$^{\dag}$ & 9.43~$\pm$~0.04$^{\dag}$ & 7.6~$\pm$~0.6& & O9~$\pm$~1V & O3~$\pm$~1V$^{\ddag}$ \\ \hline %17 & & \#35 & 23 13 47.336 & +61 27 53.74 & 18.18~$\pm$~0.03 & 14.62~$\pm$~0.01 & 12.55~$\pm$~0.01 &35.0~$\pm$~0.2& & B1.5-B3V & \\ %9 & & \#25 & 23 13 43.820 & +61 29 28.37 & 13.41~$\pm$~0.01 & 12.33~$\pm$~0.01 & 11.83~$\pm$~0.02 &9.3~$\pm$~0.3& & B2-B7V & \\ %11 & & \#17 & 23 13 31.933 & +61 27 47.40 & 13.83~$\pm$~0.01 & 12.38~$\pm$~0.01 & 11.59~$\pm$~0.01 &13.6~$\pm$~0.2& & B5-B9V & \\ %16 & & \#63 & 23 13 45.058 & +61 27 53.88 & 18.13~$\pm$~0.05 & 15.14~$\pm$~0.03 & 13.18~$\pm$~0.01 & -- & YSO & -- & H$_2$ \\ %8 & & \#6 & 23 13 43.498 & +61 29 37.31 & 11.97~$\pm$~0.01 & 10.87~$\pm$~0.01 & 9.73~$\pm$~0.03 & -- & YSO & -- & neb \\ %19 & & \#14 & 23 13 44.538 & +61 27 15.19 & 14.89~$\pm$~0.02 & 12.81~$\pm$~0.02 & 11.39~$\pm$~0.01 & -- & YSO & -- & neb, Br-abs \\ %4 & & \#11 & 23 13 30.688 & +61 29 07.47 & 17.50~$\pm$~0.04 & 13.78~$\pm$~0.01 & 11.15~$\pm$~0.01 & -- & YSO & -- & H$_2$, neb \\ %5 & IRS~4 & \#2 & 23 13 32.219 & +61 29 07.32 & 11.40~$\pm$~0.01 & 10.43~$\pm$~0.05 & 9.43~$\pm$~0.09 & -- & YSO & -- & neb \\ %6 & & \#23 & 23 13 34.240 & +61 29 09.62 & 14.13~$\pm$~0.01 & 12.74~$\pm$~0.01 & 11.78~$\pm$~0.02 & -- & FL & -- & \\ %15 & & \#36 & 23 13 45.380 & +61 28 04.19 & 20.09~$\pm$~0.14 & 15.25~$\pm$~0.03 & 12.61~$\pm$~0.01 & & FL & -- & \\ %20 & & \#18 & 23 13 57.268 & +61 28 15.63 & 15.58~$\pm$~0.01 & 13.15~$\pm$~0.01 & 11.67~$\pm$~0.01 & -- & FL & -- & \\ %13 & IRS~3 & \#26 & 23 13 43.620 & +61 28 14.00 & 16.82~$\pm$~0.04 & 13.67~$\pm$~0.03 & 11.95~$\pm$~0.03 &29.7~$\pm$~0.7& \HII{} & -- & \\ %7 & & \#12 & 23 13 33.537 & +61 28 49.80 & 15.72~$\pm$~0.07 & 12.92~$\pm$~0.07 & 11.10~$\pm$~0.04 & -- & Herbig Be & -- & \\ %10 & & \#55 & 23 13 38.488 & +61 28 47.59 & 15.98~$\pm$~0.02 & 13.98~$\pm$~0.01 & 12.92~$\pm$~0.02 & 16.0~$\pm$~0.3& PMS & G9~$\pm$~1PMS & \\ %12 & & \#39 & 23 13 40.766 & +61 28 28.20 & 14.98~$\pm$~0.01 & 13.33~$\pm$~0.01 & 12.54~$\pm$~0.01 & 11.6~$\pm$~0.2& PMS & K1~$\pm$~1PMS & \\ %1 & & \#58 & 23 13 31.325 & +61 30 22.24 & 15.12~$\pm$~0.01 & 13.73~$\pm$~0.01 & 12.98~$\pm$~0.01 & 10.3~$\pm$~0.2& PMS & K1~$\pm$~1PMS & neb Br$\gamma$ \\ %3 & & \#41 & 23 13 33.391 & +61 29 35.77 & 14.43~$\pm$~0.01 & 13.15~$\pm$~0.01 & 12.56~$\pm$~0.01 &7.9~$\pm$~0.3& PMS & K1~$\pm$~1PMS/III & \\ %18 & & \#15 & 23 13 57.238 & +61 27 47.40 & 14.95~$\pm$~0.01 & 12.60~$\pm$~0.01 & 11.56~$\pm$~0.01 &16.5~$\pm$~0.2& & G8~$\pm$~1III & \\ %2 & & \#46 & 23 13 34.218 & +61 30 17.64 & 14.18~$\pm$~0.07 & 13.03~$\pm$~0.09 & 12.66~$\pm$~0.08 &4.9~$\pm$~1.4& & KO~$\pm$~1III & \\ %14 & & \#60 & 23 13 44.280 & +61 28 10.10 & 15.68~$\pm$~0.01 & 13.91~$\pm$~0.01 & 13.05~$\pm$~0.03 &11.9~$\pm$~0.6& & K2~$\pm$~1III & H$_2$ \\ \hline % & IRS~7 & \#4 & 23 13 36.801 & +61 30 39.59 & 8.44~$\pm$~0.04$^{\dag}$ & 7.63~$\pm$~0.04$^{\dag}$ & 7.37~$\pm$~0.01$^{\dag}$ &2.6~$\pm$~0.6& & K0~$\pm$~1III & \\ \hline \end{tabular} \tablefoot{YSO: young stellar object; FL: featureless spectrum; PMS: pre-main-sequence. \tablefoottext{\dag}{Photometry from the 2MASS Point Source Catalog;} \tablefoottext{\ddag}{classification by \cite{Russeil_07}}.} \end{table}