All Figures

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig1.eps} \end{figure}$ Figure 1: Example spectra of the five CHVCs with two-component line profiles and of CHVC 148-82. The dotted curves represent a decomposition of the spectra into two Gaussian components. The superposition of a broad and a narrow Gaussian component indicates the presence of two more or less distinct phases of warm and cold neutral gas. In the case of CHVC 148-82 a separation into two Gaussian components is not useful, although the narrow cusp on top of the H I lines towards the centre of the cloud again indicates the existence of a compact core of cold neutral gas.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.3cm,clip]{1246fig2.eps} \end{figure}$ Figure 2: CHVC 148-82 as described in Sect. 4.2. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ with an increment of $1 \times 10^{19} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 3). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig3.eps} \end{figure}$ Figure 3: CHVC 148-82 as described in Sect. 4.2. a) Integrated H I column density along the slice indicated by the crosses in Fig. 2a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.32cm,clip]{1246fig4.eps} \end{figure}$ Figure 4: Head-tail CHVCs as described in Sect. 4.3. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ ( $1 \times 10^{19} \; {\rm cm^{-2}}$ in the case of CHVC 040+01) with an increment of $5 \times 10^{18} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 5). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig5.eps} \end{figure}$ Figure 5: Head-tail CHVCs as described in Sect. 4.3. a) Integrated H I column density along the slice indicated by the crosses in Fig. 4a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.8cm,clip]{1246fig6.eps} \end{figure}$ Figure 6: Bow-shock shaped CHVCs as described in Sect. 4.4. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ with an increment of $5 \times 10^{18} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 7). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig7.eps} \end{figure}$ Figure 7: Bow-shock shaped CHVCs as described in Sect. 4.4. a) Integrated H I column density along the slice indicated by the black crosses in Fig. 6a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.2cm,clip]{1246fig8.eps} \end{figure}$ Figure 8: Irregular CHVCs as described in Sect. 4.5. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ with an increment of $5 \times 10^{18} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 9). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=17.4cm,clip]{1246fig9.eps} \end{figure}$ Figure 9: Irregular CHVCs as described in Sect. 4.5. a) Integrated H I column density along the slice indicated by the crosses in Fig. 8a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=15.4cm,clip]{1246figa.eps} \end{figure}$ Figure 10: CHVC 017-25. a) Typical spectrum near the centre of the cloud which shows a two-component line profile. The dotted curves represent the decomposition of the spectrum into two Gaussian components. The three diagrams show the distribution of b) line widths, c) H I column densities and d) LSR radial velocities along the deep slice for the cold ( $\circ$ ) and warm ( $\bullet$ ) gas component. The error bars indicate the statistical uncertainties of the Gaussian fit.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=8.4cm,clip]{1246figb.eps} \end{figure}$ Figure 11: Constraining the distance of CHVC 148-82. Distance ( $\log d / {\rm kpc}$ , solid contours, labelled from 0.5 to 3.5) and equilibrium mass ( $\log M / M_{\odot}$ , dotted contours, labelled from 6.0 to 9.0 but going down to 2.5 in the upper right corner of the diagram) plotted as a function of external pressure P/k and H I mass fraction $f \equiv M_{{\rm H {\sc i}}} / M$ according to Eq. (4). In the most reasonable parameter range of $\log f \approx -2 \ldots 0$ and $\log P/k \approx 1 \ldots 3$ the distance of CHVC 148-82 is not well constrained and has values between 30 kpc and 2 Mpc.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.3cm,clip]{1246fig2.eps} \end{figure}$	Figure 2: CHVC 148-82 as described in Sect. 4.2. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ with an increment of $1 \times 10^{19} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 3). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig3.eps} \end{figure}$	Figure 3: CHVC 148-82 as described in Sect. 4.2. a) Integrated H I column density along the slice indicated by the crosses in Fig. 2a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig5.eps} \end{figure}$	Figure 5: Head-tail CHVCs as described in Sect. 4.3. a) Integrated H I column density along the slice indicated by the crosses in Fig. 4a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=17.2cm,clip]{1246fig7.eps} \end{figure}$	Figure 7: Bow-shock shaped CHVCs as described in Sect. 4.4. a) Integrated H I column density along the slice indicated by the black crosses in Fig. 6a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=16.2cm,clip]{1246fig8.eps} \end{figure}$	Figure 8: Irregular CHVCs as described in Sect. 4.5. a) Integrated H I column density map. Contours start at $5 \times 10^{18} \; {\rm cm^{-2}}$ with an increment of $5 \times 10^{18} \; {\rm cm^{-2}}$ . The crosses indicate the positions of individual spectra along the deep slice (see Fig. 9). b) Distribution of LSR radial velocities of the gas. c) Distribution of line widths ( FWHM).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=17.4cm,clip]{1246fig9.eps} \end{figure}$	Figure 9: Irregular CHVCs as described in Sect. 4.5. a) Integrated H I column density along the slice indicated by the crosses in Fig. 8a. b) Distribution of LSR radial velocities of the gas along the slice. c) Distribution of line widths ( FWHM) along the slice.
Open with DEXTER