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$\begin{figure} \par\includegraphics[angle=270, width=17.5cm]{5505fig1.eps}\end{figure}$ Figure 1: FCRAO maps of the molecular gas in the south-western part of the IC 348 cluster. Left: C¹⁸O(1-0) integrated intensity map in contours superposed on the K-band 2MASS image. The C¹⁸O emission forms an arc that partly surrounds the IC 348 cluster (located at the top left). Right: N₂H⁺(1-0) emission (contours) superposed on the Spitzer IRAC1 (3.6 $\mu$ m) image. The dense gas traced by N₂H⁺ forms two groups of dense cores, IC 348-SW1 and IC 348-SW2, and a small condensation toward the cluster center. The map center is at $\alpha _{2000}=03$ :43:58.8, $\delta _{2000}=32$ :01:51, and the first contour and interval is 0.5 K km s^-1 for C¹⁸O(1-0) and 1 K km s^-1 for N₂H⁺(1-0). The dashed line indicates the region covered by the FCRAO observations. The C¹⁸O(1-0) map has been convolved to a final resolution of 65'' ( FWHM) to filter out high frequency noise.
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In the text

$\begin{figure} \par\resizebox{8.3cm}{!}{\includegraphics{5505fig2.eps}}\end{figure}$ Figure 2: Position-velocity diagrams of the N₂H⁺(JF₁F = 101-012) ("isolated component'') emission toward IC 348-SW1 ( top) and IC 348-SW2 ( bottom). For IC 348-SW1, the position axis follows a curved path that intersects the peaks of the A, B, and C cores, and the approximate location of each core is indicated with arrows to the right. For IC 348-SW2, the position axis follows a straight line with PA = 60 $^\circ$ . In both panels, the first contour and interval are 0.1 K.
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In the text

$\begin{figure} \par\resizebox{8cm}{!}{\includegraphics{5505fig3.eps}}\end{figure}$ Figure 3: Fast outflows in IC 348-SW1. The contours show the CO(2-1) emission between 5 and 25 km s^-1 with respect to ambient cloud (at $V_{\rm LSR} = 8.6$ km s^-1). The solid blue contours represent blueshifted gas and the dashed red contours represent redshifted gas. The grey scale shows the 1.2 mm continuum emission. The two bright mm sources at the intersections of the red and blue contours are IC 348-SMM2 ( top) and HH211-MM ( bottom). Offsets as in Fig. 1, and first contour and contour interval is 3 K km s^-1.
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In the text

$\begin{figure} \par\resizebox{8cm}{!}{\includegraphics{5505fig4.eps}}\end{figure}$ Figure 4: CO(2-1) spectra and position velocity (PV) diagram along the IC 348-SMM2 outflow. The spectra present secondary peaks of high velocity emission ("bullets'') at positions symmetrically located with respect to SMM2. The PV diagram shows how the outflow speed increases with distance from SMM2 and how the bullets are highly localized in both velocity and position. Note that the offset in the spectra are referred to the map center (Fig. 1), so SMM2 is at (-25'', 75''), while in the PV diagram, the position axis measures distance from SMM2. The dashed lines mark the boundary of the fast regime. First contour an interval in the PV diagram are 0.1 K.
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In the text

$\begin{figure} \par\resizebox{15cm}{!}{\includegraphics[angle=270]{5505fig5.eps}}\end{figure}$ Figure 5: Slow outflow gas toward IC 348-SW1. The contours show the CO(2-1) emission integrated between 3 and 5 km s^-1 with respect to the ambient cloud (at $V_{\rm LSR} = 8.6$ km s^-1). The solid blue lines represent blueshifted emission, and the dashed red lines represent redshifted emission. The black dotted contours indicate the N₂H⁺(1-0) emission also shown in Fig. 1, and the grey-scale image in the background is the 24 $\mu$ m Spitzer MIPS image from the c2d Legacy Project. At least three CO bipolar outflows are present in the region (see text). Offsets as in Fig. 1, and first CO contour and contour interval is 1 K km s^-1.
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In the text

$\begin{figure} \par\resizebox{8.2cm}{!}{\includegraphics{5505fig6.eps}}\end{figure}$ Figure 6: IC 348-SMM3 outflow. The solid (blue) and dashed (red) contours indicate the CO(2-1) emission blueshifted and redshifted between 3 and 5 km s^-1 with respect to the ambient cloud (slow outflow regime). The grey scale shows our UKIRT K-band image and the plus sign indicates the position of a 24 $\mu$ m source. Offsets as in Fig. 1, and first contour and interval is 1.0 K km s^-1.
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In the text

$\begin{figure} \par\resizebox{8.2cm}{!}{\includegraphics{5505fig6.eps}}\end{figure}$	Figure 6: IC 348-SMM3 outflow. The solid (blue) and dashed (red) contours indicate the CO(2-1) emission blueshifted and redshifted between 3 and 5 km s^-1 with respect to the ambient cloud (slow outflow regime). The grey scale shows our UKIRT K-band image and the plus sign indicates the position of a 24 $\mu$ m source. Offsets as in Fig. 1, and first contour and interval is 1.0 K km s^-1.
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