All Figures

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{5127fig1.eps}\end{figure}$ Figure 1: H₂ 2.12 $\mu$ m (continuum-subtracted) SofI image of HH54. The knots of emission are labelled according to the nomenclature of G94 and Sandell et al. (1987). The contours are 3, 5, 10, 15 and 20 $\times$ the standard deviation to the mean background (5 $\times$ 10^-15 erg s^-1 cm^-2 arcsec^-2). The orientations of the slit used for spectroscopic observations are depicted.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=12.2cm,clip]{5127fig2.eps}\end{figure}$ Figure 2: 1.0-2.5 $\mu$ m low resolution spectrum of HH54B. Lines marked with an asterisk are detected with signal-to-noise ratio less than 3.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.45cm,clip]{5127fig3.eps}\end{figure}$ Figure 3: ISOCAM images of HH54. Contours are in steps of 2 $\sigma$ from a 3 $\sigma$ level of 8.3 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 5.5 $\mu$ m, 6.1 $\mu$ m and 6.9 $\mu$ m), 2.7 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 8.0 $\mu$ m), 1.4 $\times$ 10^-15 erg s^-1 cm^-2 arcsec^-1 (at 9.6 $\mu$ m) and 5.5 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 12.3 $\mu$ m).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6.8cm,clip]{5127fig4.eps}\end{figure}$ Figure 4: LWS-FP spectrum of the [O I]63 $\mu$ m line. The Gaussian fit is shown as a dotted line.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=12.45cm,clip]{5127fig5.eps}\end{figure}$ Figure 5: Boltzmann diagram of the four zones identified in the (0-0) images (see text). In the upper-left panel, symbols adopted to mark different vibrational levels are shown. In each diagram, the derived extinction, along with the temperatures of the vibrational manifolds, are indicated.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6.3cm,clip]{5127fig6a.eps}\vspace*{5mm... ....eps}\vspace*{5mm} \includegraphics[width=6.3cm,clip]{5127fig6c.eps}\end{figure}$ Figure 6: H₂ Boltzmann diagrams of the B-zone compared with the predictions for a steady-state C-type and J-type shocks ( top and middle panels) and for a J-type shock with a magnetic precursor ( bottom panel). The shock model parameters are given in each panel and each vibrational state is labelled with a symbol, as indicated.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6.9cm,clip]{5127fig7a.eps}\vspace*{5mm... ....eps}\vspace*{5mm} \includegraphics[width=6.9cm,clip]{5127fig7c.eps}\end{figure}$ Figure 7: Velocity and temperature profiles from the models of the best-fitting steady-state C-type and J-type shock ( top and middle panels) and the best-fitting J-type shock with a magnetic precursor ( bottom panel). The velocity is expressed in the shock frame and the pre-shock gas is to the left.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{5127fig8a.eps}\vspace*{3mm} ... ...8b.eps}\vspace*{3mm} \includegraphics[width=6cm,clip]{5127fig8c.eps}\end{figure}$ Figure 8: Top: CO line fluxes as a function of the rotational quantum number $J_{\rm up}$ . Continuous lines give the fluxes predicted by the C-shock model by assuming the collisional parameters of McKee (1982) (short-dashed) and of Flower (2001) plus Schöier et al. (2005) (long-dashed). The error bars represent the 1 $\sigma$ uncertainty. The downward arrow indicates a 3 $\sigma$ upper limit; middle: as for the top panel but for the steady-state J-shock; bottom: as for the top panel but for the J-shock with a magnetic precursor.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{5127fig9a.eps}\vspace*{3mm} ... ...9b.eps}\vspace*{3mm} \includegraphics[width=8cm,clip]{5127fig9c.eps}\end{figure}$ Figure 9: Top panel: H₂O line fluxes as a function of wavelength. The LWS spectral range extends up to 200 $\mu$ m, but we report in the figures all the lines falling in the range open to Herschel observations. Data points with the relative 1 $\sigma$ uncertainties are represented with open circles, while the ortho- and para-H₂O fluxes predicted by the C-shock model of Table 6 are shown with filled circles and triangles, respectively. The downward arrow indicates a 3 $\sigma$ upper limit. The wavelength range covered by PACS and HIFI is indicated, as well. Middle panel: as in the top panel but for the steady-state J-shock model. Bottom panel: as in the top panel but for the J-shock with a magnetic precursor model.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{5127fig10.eps}\end{figure}$ Figure 10: Top: output of the LVG model (in the framework of the C+J model): 179 $\mu$ m line brightness and optical depth. The neutral temperature is also shown for comparison. Bottom: water column density and abundance predicted by the (C+J) model.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{5127fig1.eps}\end{figure}$	Figure 1: H₂ 2.12 $\mu$ m (continuum-subtracted) SofI image of HH54. The knots of emission are labelled according to the nomenclature of G94 and Sandell et al. (1987). The contours are 3, 5, 10, 15 and 20 $\times$ the standard deviation to the mean background (5 $\times$ 10^-15 erg s^-1 cm^-2 arcsec^-2). The orientations of the slit used for spectroscopic observations are depicted.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=12.2cm,clip]{5127fig2.eps}\end{figure}$	Figure 2: 1.0-2.5 $\mu$ m low resolution spectrum of HH54B. Lines marked with an asterisk are detected with signal-to-noise ratio less than 3.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=16.45cm,clip]{5127fig3.eps}\end{figure}$	Figure 3: ISOCAM images of HH54. Contours are in steps of 2 $\sigma$ from a 3 $\sigma$ level of 8.3 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 5.5 $\mu$ m, 6.1 $\mu$ m and 6.9 $\mu$ m), 2.7 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 8.0 $\mu$ m), 1.4 $\times$ 10^-15 erg s^-1 cm^-2 arcsec^-1 (at 9.6 $\mu$ m) and 5.5 $\times$ 10^-16 erg s^-1 cm^-2 arcsec^-1 (at 12.3 $\mu$ m).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6.8cm,clip]{5127fig4.eps}\end{figure}$	Figure 4: LWS-FP spectrum of the [O I]63 $\mu$ m line. The Gaussian fit is shown as a dotted line.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=12.45cm,clip]{5127fig5.eps}\end{figure}$	Figure 5: Boltzmann diagram of the four zones identified in the (0-0) images (see text). In the upper-left panel, symbols adopted to mark different vibrational levels are shown. In each diagram, the derived extinction, along with the temperatures of the vibrational manifolds, are indicated.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6.3cm,clip]{5127fig6a.eps}\vspace{5mm... ....eps}\vspace{5mm} \includegraphics[width=6.3cm,clip]{5127fig6c.eps}\end{figure}$	Figure 6: H₂ Boltzmann diagrams of the B-zone compared with the predictions for a steady-state C-type and J-type shocks ( top and middle panels) and for a J-type shock with a magnetic precursor ( bottom panel). The shock model parameters are given in each panel and each vibrational state is labelled with a symbol, as indicated.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6.9cm,clip]{5127fig7a.eps}\vspace{5mm... ....eps}\vspace{5mm} \includegraphics[width=6.9cm,clip]{5127fig7c.eps}\end{figure}$	Figure 7: Velocity and temperature profiles from the models of the best-fitting steady-state C-type and J-type shock ( top and middle panels) and the best-fitting J-type shock with a magnetic precursor ( bottom panel). The velocity is expressed in the shock frame and the pre-shock gas is to the left.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8cm,clip]{5127fig10.eps}\end{figure}$	Figure 10: Top: output of the LVG model (in the framework of the C+J model): 179 $\mu$ m line brightness and optical depth. The neutral temperature is also shown for comparison. Bottom: water column density and abundance predicted by the (C+J) model.
Open with DEXTER