\begin{table}%t2 \caption{\label{table:HII}\hii~region catalogue of the bar zone of NGC~2903. } \small%\centering \par \begin{tabular}{ccccccccccc} \hline \hline \noalign{\smallskip} ID & RA & Dec & Radius & $e$ & PA & $\log$~$L_{\rm H_{\alpha}+[NII]}$ & $\log$~$EW_{\rm H_{\alpha}+[NII]}$ & $\log(L_{\rm 24~\mu m})$ & $A_{\rm H\alpha}$ & ${\it SFR}$ \\ & (J2000) & (J2000) & (arcsec) & & ($\deg$)& (in erg~s$^{-1}$) & (in~\AA) & (erg~s$^{-1}$) & (mag) & ($10^{-3}~M_\odot~{\rm yr}^{-1}$)\\ \hline 1 & 09:32:12.35 & 21:31:04.66 & 3.1 & 0 & 90 & 38.99 $\pm$ 0.05 & 2.32 $\pm$ 0.11 & 40.60 & 1.21 & 17.7 $\pm$ 0.9 \\ 2 & 09:32:11.69 & 21:30:40.84 & 5.23 & 0.51 & 158 & 39.41 $\pm$ 0.05 & 2.86 $\pm$ 0.02 & 40.93 & 1.07 & 41.0 $\pm$ 2.2 \\ 3 & 09:32:11.67 & 21:30:12.75 & 3.17 & 0 & 0 & 38.71 $\pm$ 0.10 & -- & 40.24 & 1.09 & 8.3 $\pm$ 0.9 \\ 4 & 09:32:12.56 & 21:30:29.23 & 3 & 0 & 0 & 38.75 $\pm$ 0.08 & 2.70 $\pm$ 0.09 & 40.19 & 0.95 & 7.9 $\pm$ 0.8 \\ 5 & 09:32:08.77 & 21:29:39.86 & 7.3 & 0.81 & --28 & 39.28 $\pm$ 0.08 & 2.34 $\pm$ 0.04 & 40.71 & 0.93 & 26.5 $\pm$ 2.9 \\ 6 & 09:32:07.62 & 21:29:33.54 & 3.1 & 0 & 0 & 38.81 $\pm$ 0.08 & 3.07 $\pm$ 0.03 & 40.35 & 1.09 & 10.5 $\pm$ 0.9 \\ 7 & 09:32:14.38 & 21:30:40.38 & 4.23 & 0.68 & 6 & 38.76 $\pm$ 0.12 & -- & 40.24 & 1.01 & 8.6 $\pm$ 1.2 \\ 8 & 09:32:13.75 & 21:31:02.56 & 5.23 & 0.8 & --48 & 38.87 $\pm$ 0.11 & -- & 39.49 & 0.21 & 5.3 $\pm$ 1.5 \\ 9 & 09:32:13.83 & 21:31:09.62 & 2.33 & 0 & 0 & 38.43 $\pm$ 0.10 & 2.50 $\pm$ 0.01 & 39.32 & 0.36 & 2.2 $\pm$ 0.5 \\ 10 & 09:32:12.57 & 21:30:52.67 & 4.17 & 0.77 & 10 & 38.60 $\pm$ 0.14 & -- & 40.05 & 0.96 & 5.7 $\pm$ 1.0 \\ 11 & 09:32:13.60 & 21:30:24.86 & 3.7 & 0.52 & 38 & 38.62 $\pm$ 0.14 & -- & 40.01 & 0.88 & 5.6 $\pm$ 1.1 \\ 12 & 09:32:07.12 & 21:29:26.37 & 2.03 & 0 & 0 & 38.12 $\pm$ 0.16 & 2.28 $\pm$ 0.01 & 39.65 & 1.08 & 2.1 $\pm$ 0.4 \\ 13 & 09:32:11.43 & 21:30:00.36 & 3.1 & 0 & 0 & 38.55 $\pm$ 0.14 & -- & 39.97 & 0.92 & 4.9 $\pm$ 0.9 \\ 14 & 09:32:12.44 & 21:30:40.75 & 3 & 0 & 0 & 38.70 $\pm$ 0.09 & 2.43 $\pm$ 0.14 & 40.13 & 0.93 & 7.0 $\pm$ 0.8 \\ 15 & 09:32:12.63 & 21:30:36.70 & 2.23 & 0 & 0 & 38.30 $\pm$ 0.13 & -- & 39.70 & 0.90 & 2.7 $\pm$ 0.5 \\ 16 & 09:32:05.59 & 21:28:54.01 & 2.8 & 0 & 90 & 38.59 $\pm$ 0.10 & 2.87 $\pm$ 0.03 & 39.77 & 0.61 & 4.1 $\pm$ 0.7 \\ 17 & 09:32:07.77 & 21:28:56.02 & 3.93 & 0 & 0 & 38.87 $\pm$ 0.11 & -- & 40.51 & 1.27 & 14.1 $\pm$ 1.4 \\ 18 & 09:32:07.56 & 21:29:11.66 & 2.6 & 0 & 0 & 38.33 $\pm$ 0.16 & -- & 40.23 & 1.74 & 6.4 $\pm$ 0.6 \\ 19 & 09:32:07.83 & 21:29:26.69 & 3.57 & 0 & 90 & 38.66 $\pm$ 0.14 & -- & 40.32 & 1.30 & 9.0 $\pm$ 1.2 \\ 20 & 09:32:12.01 & 21:30:17.87 & 2.87 & 0.85 & 3 & 38.22 $\pm$ 0.13 & -- & 39.79 & 1.14 & 2.8 $\pm$ 0.4 \\ 21 & 09:32:12.35 & 21:30:22.63 & 2.7 & 0.78 & 108 & 38.25 $\pm$ 0.13 & 2.60 $\pm$ 0.09 & 39.49 & 0.68 & 2.0 $\pm$ 0.4 \\ 22 & 09:32:13.76 & 21:30:18.72 & 1.9 & 0 & 0 & 38.00 $\pm$ 0.18 & -- & 39.22 & 0.66 & 1.1 $\pm$ 0.3 \\ 23 & 09:32:11.44 & 21:31:11.46 & 2.33 & 0 & 90 & 38.30 $\pm$ 0.14 & -- & 39.87 & 1.15 & 3.4 $\pm$ 0.5 \\ 24 & 09:32:08.76 & 21:28:46.76 & 3.53 & 0 & 90 & 39.10 $\pm$ 0.05 & 2.31 $\pm$ 0.04 & 40.50 & 0.89 & 16.8 $\pm$ 1.2 \\ 25 & 09:32:07.88 & 21:28:47.69 & 3.93 & 0 & 0 & 39.02 $\pm$ 0.07 & 2.63 $\pm$ 0.01 & 40.59 & 1.15 & 18.0 $\pm$ 1.4 \\ 26 & 09:32:11.67 & 21:31:27.14 & 3.6 & 0 & 0 & 38.77 $\pm$ 0.11 & -- & 40.39 & 1.23 & 10.8 $\pm$ 1.2 \\ 27 & 09:32:09.59 & 21:28:47.12 & 4.17 & 0 & 0 & 39.41 $\pm$ 0.03 & 2.44 $\pm$ 0.02 & 40.93 & 1.08 & 40.8 $\pm$ 1.6 \\ 28 & 09:32:10.62 & 21:31:31.74 & 3.5 & 0 & 90 & 38.62 $\pm$ 0.15 & 2.56 $\pm$ 0.04 & 40.20 & 1.17 & 7.2 $\pm$ 1.1 \\ 29 & 09:32:10.18 & 21:28:42.26 & 3.1 & 0 & 90 & 38.52 $\pm$ 0.15 & 2.31 $\pm$ 0.03 & 40.13 & 1.21 & 6.0 $\pm$ 0.9 \\ 30 & 09:32:08.53 & 21:31:30.16 & 2.53 & 0 & 0 & 38.46 $\pm$ 0.11 & 2.44 $\pm$ 0.06 & 40.10 & 1.27 & 5.5 $\pm$ 0.6 \\ 31 & 09:32:11.20 & 21:28:57.28 & 3.67 & 0 & 0 & 39.19 $\pm$ 0.04 & 2.67 $\pm$ 0.03 & 40.59 & 0.89 & 20.7 $\pm$ 1.2 \\ 32 & 09:32:11.67 & 21:28:30.75 & 3.7 & 0 & 0 & 38.84 $\pm$ 0.10 & 2.67 $\pm$ 0.07 & 39.62 & 0.29 & 5.3 $\pm$ 1.3 \\ 33 & 09:32:12.57 & 21:28:38.22 & 3.5 & 0 & 0 & 39.14 $\pm$ 0.04 & 2.76 $\pm$ 0.02 & 40.56 & 0.91 & 19.1 $\pm$ 1.1 \\ 34 & 09:32:13.09 & 21:28:43.61 & 3.83 & 0 & 0 & 39.24 $\pm$ 0.04 & 2.49 $\pm$ 0.03 & 40.19 & 0.41 & 14.8 $\pm$ 1.4 \\ 35 & 09:32:07.93 & 21:28:16.18 & 2.67 & 0 & 0 & 38.34 $\pm$ 0.17 & 2.63 $\pm$ 0.00 & 39.73 & 0.88 & 2.9 $\pm$ 0.7 \\ 36 & 09:32:09.63 & 21:31:06.38 & 6.4 & 0 & 90 & 39.81 $\pm$ 0.03 & 2.51 $\pm$ 0.02 & 41.47 & 1.29 & 126.1 $\pm$ 3.8 \\ 37 & 09:32:08.43 & 21:31:42.49 & 2.8 & 0 & 90 & 38.61 $\pm$ 0.10 & -- & 39.67 & 0.50 & 3.8 $\pm$ 0.7 \\ 38 & 09:32:08.81 & 21:30:55.01 & 4 & 0 & 0 & 39.14 $\pm$ 0.06 & 2.52 $\pm$ 0.08 & 40.51 & 0.85 & 17.8 $\pm$ 1.5 \\ 39 & 09:32:09.08 & 21:31:14.75 & 2.17 & 0 & 0 & 38.35 $\pm$ 0.11 & -- & 40.07 & 1.41 & 4.9 $\pm$ 0.4 \\ 40 & 09:32:12.38 & 21:31:30.57 & 2.33 & 0 & 0 & 38.30 $\pm$ 0.14 & -- & 38.98 & 0.24 & 1.5 $\pm$ 0.5 \\ 41 & 09:32:11.97 & 21:31:21.00 & 2 & 0 & 0 & 38.22 $\pm$ 0.12 & -- & 39.68 & 0.98 & 2.4 $\pm$ 0.4 \\ 42 & 09:32:08.06 & 21:28:42.43 & 3.67 & 0 & 0 & 38.87 $\pm$ 0.09 & 2.25 $\pm$ 0.01 & 40.32 & 0.97 & 10.7 $\pm$ 1.2 \\ 43 & 09:32:13.40 & 21:28:46.21 & 3.83 & 0 & 0 & 39.16 $\pm$ 0.05 & 2.41 $\pm$ 0.03 & 40.20 & 0.48 & 13.4 $\pm$ 1.4 \\ 44 & 09:32:09.01 & 21:28:40.08 & 2.37 & 0 & 0 & 38.52 $\pm$ 0.09 & -- & 40.38 & 1.67 & 9.2 $\pm$ 0.5 \\ 45 & 09:32:11.96 & 21:29:10.88 & 3.27 & 0 & 0 & 38.90 $\pm$ 0.07 & 2.64 $\pm$ 0.02 & 40.55 & 1.27 & 15.3 $\pm$ 1.0 \\ 46 & 09:32:10.39 & 21:31:11.67 & 3.7 & 0 & 0 & 38.79 $\pm$ 0.11 & 2.43 $\pm$ 0.04 & 40.42 & 1.25 & 11.5 $\pm$ 1.3 \\ 47 & 09:32:13.05 & 21:31:35.10 & 2.43 & 0 & 0 & 38.28 $\pm$ 0.16 & 2.85 $\pm$ 0.01 & 39.45 & 0.62 & 2.0 $\pm$ 0.5 \\ 48 & 09:32:13.47 & 21:31:32.35 & 2.7 & 0 & 0 & 38.53 $\pm$ 0.11 & -- & 40.00 & 0.99 & 5.0 $\pm$ 0.7 \\ 49 & 09:32:13.32 & 21:31:21.74 & 2.4 & 0 & 0 & 38.19 $\pm$ 0.19 & 2.72 $\pm$ 0.09 & 39.47 & 0.73 & 1.8 $\pm$ 0.5 \\ 50 & 09:32:09.09 & 21:28:31.92 & 3.03 & 0 & 0 & 38.42 $\pm$ 0.18 & -- & 40.34 & 1.80 & 8.1 $\pm$ 0.9 \\ 51 & 09:32:12.27 & 21:30:08.09 & 2.7 & 0.03 & 83 & 38.21 $\pm$ 0.23 & -- & 39.72 & 1.04 & 2.5 $\pm$ 0.7 \\ 52 & 09:32:08.58 & 21:31:34.64 & 2.67 & 0 & 0 & 38.56 $\pm$ 0.10 & -- & 40.10 & 1.09 & 5.9 $\pm$ 0.7 \\ 53 & 09:32:11.28 & 21:31:16.48 & 2.5 & 0 & 0 & 38.17 $\pm$ 0.21 & 2.21 $\pm$ 0.36 & 39.93 & 1.48 & 3.4 $\pm$ 0.6 \\ 54 & 09:32:12.06 & 21:31:11.01 & 3.67 & 0 & 0 & 38.53 $\pm$ 0.20 & 1.99 $\pm$ 0.11 & 40.29 & 1.47 & 7.8 $\pm$ 1.2 \\ 55 & 09:32:10.77 & 21:29:56.08 & 2.5 & 0 & 0 & 38.27 $\pm$ 0.17 & 1.85 $\pm$ 0.21 & 40.29 & 2.00 & 6.9 $\pm$ 0.6 \\ 56 & 09:32:11.01 & 21:30:03.02 & 3.2 & 0 & 0 & 38.51 $\pm$ 0.16 & -- & 40.63 & 2.21 & 14.6 $\pm$ 0.9 \\ 57 & 09:32:12.42 & 21:29:30.64 & 3.17 & 0 & 0 & 38.47 $\pm$ 0.17 & -- & 40.11 & 1.26 & 5.6 $\pm$ 0.9 \\ 58 & 09:32:12.10 & 21:29:33.70 & 2.67 & 0 & 0 & 38.18 $\pm$ 0.24 & 3.15 $\pm$ 0.07 & 39.70 & 1.06 & 2.4 $\pm$ 0.7 \\ 59 & 09:32:12.12 & 21:29:26.71 & 2.6 & 0 & 0 & 38.12 $\pm$ 0.26 & -- & 39.78 & 1.30 & 2.6 $\pm$ 0.6 \\ 60 & 09:32:12.21 & 21:29:17.71 & 2.43 & 0 & 0 & 38.06 $\pm$ 0.26 & -- & 39.92 & 1.67 & 3.2 $\pm$ 0.5 \\ 61 & 09:32:11.56 & 21:29:16.67 & 3.2 & 0 & 0 & 38.32 $\pm$ 0.25 & 2.85 $\pm$ 0.06 & 40.03 & 1.38 & 4.4 $\pm$ 0.9 \\ 62 & 09:32:10.49 & 21:28:57.76 & 3.07 & 0.55 & 61 & 38.27 $\pm$ 0.21 & 2.29 $\pm$ 0.05 & 39.43 & 0.60 & 1.9 $\pm$ 0.7 \\ 63 & 09:32:07.53 & 21:29:19.29 & 4.9 & 0.9 & --18 & 38.33 $\pm$ 0.25 & 2.46 $\pm$ 0.04 & 40.10 & 1.50 & 5.0 $\pm$ 1.0 \\ 64 & 09:32:07.53 & 21:29:04.49 & 4.63 & 0.87 & 14 & 38.37 $\pm$ 0.23 & -- & 40.16 & 1.54 & 5.8 $\pm$ 1.0 \\ 65 & 09:32:08.01 & 21:30:28.55 & 4.13 & 0 & 90 & 38.83 $\pm$ 0.13 & -- & 39.96 & 0.56 & 6.7 $\pm$ 1.6 \\ 66 & 09:32:08.18 & 21:30:42.83 & 2.67 & 0 & 0 & 38.16 $\pm$ 0.25 & -- & 39.09 & 0.39 & 1.2 $\pm$ 0.7 \\ 67 & 09:32:12.63 & 21:29:25.61 & 2.33 & 0 & 0 & 38.13 $\pm$ 0.21 & -- & 39.50 & 0.86 & 1.7 $\pm$ 0.5 \\ \hline \end{tabular} \tablefoot{Column~1: ID number of the catalogued \hii~regions; Cols.~2 and~3: equatorial coordinates; Col.~4: \hii~region radius in arcseconds; Cols.~5 and~6: eccentricity and position angle (measured North-West) of the integration apertures; Col.~7: decimal logarithm of the \ha~luminosity (in~erg~s$^{-1}$); Col.~8: decimal logarithm of the \ha~equivalent width; Col.~9: decimal logarithm of the 24~\micron\ emission within the \hii~region apertures; Col.~10: \ha~attenuation see Sect.~\ref{sec:dust}; Col.~11: estimate of the current star-formation rate for each catalogued \hii~region. Columns~7$-$10 include the corresponding correction for Galactic extinction (Schlegel et~al. \cite{Schlegel1998}). The SFRs were obtained after applying a correction of 25\% for [\nii]~contamination to the \ha~luminosities and dust extinction as given in Col.~10.} \end{table}