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$\begin{figure} \par\includegraphics[width=14cm,clip]{1090f1.ps}\end{figure}$ Figure 1: Mosaic of the observed fields. Each image is obtained by adding $\lambda$ maps over the free spectral range, then flat-fielded and corrected for distortion. It is equivalent to a photograph obtained through a 2.4 Å bandwidth filter. The $V_{\rm lsr}$ (km $\rm s^{-1}$ ) of some remarkable H $\alpha$ features and identification of optically detected HII regions are indicated. Coordinates are J2000.
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In the text

$\begin{figure} \par\includegraphics[width=7.2cm,clip]{1090f2.ps}\par\includegraphics[width=7.2cm,clip]{1090f3.ps}\end{figure}$ Figure 2: Top: H $\alpha$ image of RCW106 (North is up, East is to the left) overlaid with 5 GHz radio continuum isocontours. The square symbols indicate the position (from north to south) of the radio sources G333.114-0.441, G332.789-0.564 and G332.662-0.607. Bottom: MSX greyscale image overlaid with the same 5 GHz radio continuum isocontours (the square delineates the H $\alpha$ field).
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In the text

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{1090f4.ps}\vspace*{2.5mm} ... ...{5mm}}\vspace*{2.5mm} \includegraphics[width=8.25cm,clip]{1090f6.ps}\end{figure}$ Figure 3: H $\alpha$ image of RCW104, RCW102 and RCW106. For some strategic positions, the $V_{\rm lsr}$ , with the line widths in parentheses, are indicated (in km $\rm s^{-1}$ ).
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In the text

$\begin{figure} \par {\hspace*{1.7cm}\includegraphics[width=5cm,clip]{g33136.ps}\... ...5cm,clip]{1090f13.ps}\includegraphics[width=4.15cm,clip]{1090f14.ps}\end{figure}$ Figure 4: AAO/UKST H $\alpha$ survey images (North is up, East is left). The first image is a 12' view of G331.36+0.507, others are 5' views of 2 = G331.354+1.07, 3 = G333.726+0.366, 4 = G332.148-0.446, 5 = G332.541-0.111, 6 = G332.978+0.792, 7 = G333.251+0.06 and 8 = G333.61-0.208. The image 9 is the AAO/UKST short red image of G333.61-0.208.
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In the text

$\begin{figure} \par\includegraphics[width=13cm,clip]{1090f15.ps}\end{figure}$ Figure 5: H $\alpha$ $\lambda$ -maps centered at 16h19m, -52 $^\circ$ 30' at velocity -62 km $\rm s^{-1}$ ( left) and -46 km $\rm s^{-1}$ ( right). The equivalent bandwith is 0.1 Å.
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In the text

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{1090f16.ps}\end{figure}$ Figure 6: Total H $\alpha$ emission centered at 16h19m, -52 $^\circ$ 30'. The positions P1 to P7 for which CO profiles have been observed are indicated.
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In the text

$\begin{figure} \par\includegraphics[width=5.35cm,clip]{1090f17.ps}\end{figure}$ Figure 7: 12CO(2-1) profiles towards the positions P1 to P7.
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In the text

$\begin{figure} \par\includegraphics[width=7.6cm,clip]{1090f18.ps}\end{figure}$ Figure 8: H $\alpha$ image (15' $\times$ 15') of G333.61-0.208 (North is up, East is left) overlaid with MSX band A isocontours. The cross indicates the position of the source G333.6-0.1.
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In the text

$\begin{figure} \par\includegraphics[angle=270,width=7.35cm,clip]{1090f19.ps}\end{figure}$ Figure 9: Number of star per 350 pc bins versus distance.
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In the text

$\begin{figure} \par\includegraphics[width=7.2cm,clip]{1090f2.ps}\par\includegraphics[width=7.2cm,clip]{1090f3.ps}\end{figure}$	Figure 2: Top: H $\alpha$ image of RCW106 (North is up, East is to the left) overlaid with 5 GHz radio continuum isocontours. The square symbols indicate the position (from north to south) of the radio sources G333.114-0.441, G332.789-0.564 and G332.662-0.607. Bottom: MSX greyscale image overlaid with the same 5 GHz radio continuum isocontours (the square delineates the H $\alpha$ field).
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$\begin{figure} \par\includegraphics[width=7.7cm,clip]{1090f4.ps}\vspace{2.5mm} ... ...{5mm}}\vspace{2.5mm} \includegraphics[width=8.25cm,clip]{1090f6.ps}\end{figure}$	Figure 3: H $\alpha$ image of RCW104, RCW102 and RCW106. For some strategic positions, the $V_{\rm lsr}$ , with the line widths in parentheses, are indicated (in km $\rm s^{-1}$ ).
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$\begin{figure} \par {\hspace*{1.7cm}\includegraphics[width=5cm,clip]{g33136.ps}\... ...5cm,clip]{1090f13.ps}\includegraphics[width=4.15cm,clip]{1090f14.ps}\end{figure}$	Figure 4: AAO/UKST H $\alpha$ survey images (North is up, East is left). The first image is a 12' view of G331.36+0.507, others are 5' views of 2 = G331.354+1.07, 3 = G333.726+0.366, 4 = G332.148-0.446, 5 = G332.541-0.111, 6 = G332.978+0.792, 7 = G333.251+0.06 and 8 = G333.61-0.208. The image 9 is the AAO/UKST short red image of G333.61-0.208.
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$\begin{figure} \par\includegraphics[width=13cm,clip]{1090f15.ps}\end{figure}$	Figure 5: H $\alpha$ $\lambda$ -maps centered at 16h19m, -52 $^\circ$ 30' at velocity -62 km $\rm s^{-1}$ ( left) and -46 km $\rm s^{-1}$ ( right). The equivalent bandwith is 0.1 Å.
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$\begin{figure} \par\includegraphics[width=7.7cm,clip]{1090f16.ps}\end{figure}$	Figure 6: Total H $\alpha$ emission centered at 16h19m, -52 $^\circ$ 30'. The positions P1 to P7 for which CO profiles have been observed are indicated.
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$\begin{figure} \par\includegraphics[width=5.35cm,clip]{1090f17.ps}\end{figure}$	Figure 7: 12CO(2-1) profiles towards the positions P1 to P7.
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$\begin{figure} \par\includegraphics[width=7.6cm,clip]{1090f18.ps}\end{figure}$	Figure 8: H $\alpha$ image (15' $\times$ 15') of G333.61-0.208 (North is up, East is left) overlaid with MSX band A isocontours. The cross indicates the position of the source G333.6-0.1.
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$\begin{figure} \par\includegraphics[angle=270,width=7.35cm,clip]{1090f19.ps}\end{figure}$	Figure 9: Number of star per 350 pc bins versus distance.
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