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$\begin{figure} \par\includegraphics[angle=-90,width=11cm,clip]{5183fig1.eps} \end{figure}$ Figure 1: H $\alpha$ image of the L723 field. HH 223 is at the center of the field. Crosses mark the positions of the VLA sources of Anglada et al. (1996). The positions of the H₂ emission peaks K2, K1 and H₂-NW of Palacios & Eiroa (1999) have been marked by triangles. Open circles mark the stars that coincide with the positions of the objects V84 and V85 of Vrba et al. (1986). Rectangles mark the new H $\alpha$ nebulosities detected in this work. The nebulosity coinciding with the V83 object of Vrba et al. (1986) (HH 223-SE1 in this work) has also been marked.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=10.6cm,clip]{5183fig2.eps} \end{figure}$ Figure 2: [SII] image of the L723 field.
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In the text

$\begin{figure} \par\includegraphics[angle=90,width=11.4cm,clip]{5183fig3.eps} \end{figure}$ Figure 3: Close-up of HH 223 and the two adjacent nebulosities N1 and N2 obtained from the H $\alpha$ image of Fig. 1, showing the details of the emission in HH 223. Several knots appear embedded in a low-emission nebula. A contour plot has been superposed to help with the identification of the knots. Dashed and dotted lines mark the orientations refered to in the text.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=11.4cm,clip]{5183fig4.eps} \end{figure}$ Figure 4: [SII]/H $\alpha$ flux ratio for HH 223. A contour plot of the H $\alpha$ line flux has been superposed.
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In the text

$\begin{figure} \par\includegraphics[width=16cm,clip]{5183fig5.eps} \end{figure}$ Figure 5: Image of L723 in H $\alpha$ with HH 223 in the center of the field, superposed on the CO outflows from Lee et al. (2002). The VLA2 source and the other H $\alpha$ nebulosities have been labeled. The triangles mark the positions of the H₂ emission peaks of Palacios & Eiroa (1999).
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=10.6cm,clip]{5183fig2.eps} \end{figure}$	Figure 2: [SII] image of the L723 field.
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$\begin{figure} \par\includegraphics[angle=90,width=11.4cm,clip]{5183fig3.eps} \end{figure}$	Figure 3: Close-up of HH 223 and the two adjacent nebulosities N1 and N2 obtained from the H $\alpha$ image of Fig. 1, showing the details of the emission in HH 223. Several knots appear embedded in a low-emission nebula. A contour plot has been superposed to help with the identification of the knots. Dashed and dotted lines mark the orientations refered to in the text.
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$\begin{figure} \par\includegraphics[angle=-90,width=11.4cm,clip]{5183fig4.eps} \end{figure}$	Figure 4: [SII]/H $\alpha$ flux ratio for HH 223. A contour plot of the H $\alpha$ line flux has been superposed.
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$\begin{figure} \par\includegraphics[width=16cm,clip]{5183fig5.eps} \end{figure}$	Figure 5: Image of L723 in H $\alpha$ with HH 223 in the center of the field, superposed on the CO outflows from Lee et al. (2002). The VLA2 source and the other H $\alpha$ nebulosities have been labeled. The triangles mark the positions of the H₂ emission peaks of Palacios & Eiroa (1999).
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