All Figures

$\begin{figure} \par\includegraphics[width=17cm,clip]{9067f01.eps}\end{figure}$ Figure 1: HVC-all-sky map created by Westmeier (2007) derived from the data of the LAB Survey (Kalberla et al. 2005). The different symbols mark the positions of 103 sight lines that were observed with UVES. Along 35 lines of sight we detect Ca II/Na II absorption components. For 19 of them we have obtained additional H I observations with the Effelsberg 100-m telescope.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9067f02.eps}\end{figure}$ Figure 2: The Ca II column density distribution f(N) derived from UVES data. The dashed line represents a power-law fit $f(N)=CN^{\beta }$ with $\beta =-1.6 \pm 0.3$ and $\log C=8.0 \pm 3.1$ defined over the range of column densities from $\log (N_{\rm CaII}/{\rm cm}^{-2})=11.6$ to $\log (N_{\rm CaII}/{\rm cm}^{-2})=12.5$ . The vertical solid line indicates the UVES $4\sigma$ detection limit $\log (N_{\rm CaII}/{\rm cm}^{-2})=10.7$ for the median $S/N_{\rm r}$ and the dotted line represents the maximal detection limit $\log (N_{\rm CaII}^{\rm max}/{\rm cm}^{-2})=11.7$ for the minimal $S/N_{\rm r}$ . The minimal detection limit $\log (N_{\rm CaII}^{\rm min}/{\rm cm}^{-2})=10.4$ for the maximal $S/N_{\rm r}$ is not plotted in this figure. The vertical errorbars are Poisson errors.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9067f03.eps}\end{figure}$ Figure 3: The column density distribution function f(N). The H I column densities are calculated from the Ca II column densities detected with UVES with the help of the correlation between the abundance A(Ca II) and $N_{\rm HI}$ (Wakker & Mathis 2000). The dashed line represents a power law fit $f(N)=CN^{\beta }$ with $\beta =-1.3 \pm 0.1$ and $\log C=7.4\pm2.3$ defined over the range of column densities from $\log (N_{\rm HI}/{\rm cm}^{-2})=19.5$ to $\log (N_{\rm HI}/{\rm cm}^{-2})=22.5$ . The vertical and horizontal errorbars indicate Poisson and statistical (from Voigt profile fitting) errors, respectively. The vertical solid and dotted lines indicate the converted $4\sigma$ median and maximal UVES detection limit.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9067f04.ps}\end{figure}$ Figure 4: The H I column density distribution observed with Effelsberg. The dashed line represents a power law fit over the range of column densities ( $\log (N_{\rm HI}/{\rm cm}^{-2})$ ) from 18.5 to 20. The vertical errorbars indicate Poisson errors.
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In the text

$\begin{figure} \par\includegraphics[width=8.4cm,clip]{9067f05.eps}\end{figure}$ Figure 5: Distribution of deviation velocities of the observed intermediate- and high-velocity absorbing systems versus galactic longitude and latitude. The dimensions of the triangles are proportional to the Ca II column densities observed with the UVES instrument. In the upper right corner of the diagram an exemplary Ca II column density of $N_{\rm CaII}=1 \times 10^{12}$ cm^-2 is shown.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{9067f06.eps}\end{figure}$ Figure 6: Number of sight lines with intermediate- or high-velocity Ca II absorption lines versus deviation velocity.
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In the text

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{9067f07.eps}\end{figure}$ Figure 7: Number of intermediate- and high-velocity Ca II absorption lines versus Doppler-parameter (b-value). The dashed vertical line indicates the UVES velocity resolution of $\Delta v_{\rm UVES} \approx 7~{\rm km~s}^{-1}$ .
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In the text

$\begin{figure} \par\includegraphics[width=14.4cm,clip]{9067f08.eps} \end{figure}$ Figure 8: Ca II and Na I absorption and H I emission spectra in the direction of the quasars QSO J0003-2323, J092913-021446, QSO J1344-1035, and QSO B1347-2457 obtained with UVES and the Effelsberg 100-m telescope, respectively. The absorption and corresponding emission lines are indicated by dashed lines.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f09.eps}\end{figure}$ Figure 9: Ca II and Na I absorption spectra of QSO J0153-4311, J222756-224302, QSO B0109-353, and QSO B0002-422 obtained with UVES. For these sight lines no Effelsberg data are available.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f10.eps}\end{figure}$ Figure 10: Ca II and Na I absorption spectra of QSO B1331+170+2411 J144653+011355, J143649-161341, and J123437-075843 obtained with UVES. Additionally the corresponding H I emission line profiles measured with the Effelsberg 100-m telescope are shown. The spikes in the Effelsberg spectra of J123437-075843 are radio frequency interferences (RFI).
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f11.eps}\end{figure}$ Figure 11: Ca II and Na I absorption spectra of QSO B0112-30, QSO B2314-409, QSO B0122-379, and QSO B0515-4414 obtained with UVES. For these sight lines no Effelsberg data are available.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f12.eps}\end{figure}$ Figure 12: Ca II and Na I absorption and corresponding H I emission spectra of QSO B1212+3326, QSO B1101-26, QSO 1448-232, and QSO J1232-0224 obtained with UVES and the Effelsberg 100-m telescope, respectively.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f13.eps}\end{figure}$ Figure 13: Ca II and Na I absorption spectra of QSO B0458-0203, QSO B1036-2257, QSO J1039-2719, and QSO J1211+1030 obtained with UVES. Additionally the corresponding H I emission line profiles measured with the Effelsberg 100-m telescope are shown.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f14.eps}\end{figure}$ Figure 14: Ca II and Na I absorption spectra of QSO J0139-0824, QSO J0105-1846, and QSO J2155-0922 obtained with UVES. No Effelsberg data are available.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f15.eps}\end{figure}$ Figure 15: Na I absorption and H I emission spectra in the direction of the quasars J081331+254503, QSO J0830+2411, and QSO B0450-1310B obtained with UVES and the Effelsberg 100-m telescope. For these sight lines no Ca II data are available.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f16.eps}\end{figure}$ Figure 16: Upper row: Na I absorption spectra of QSO B0216+0803 and QSO B0952+179 obtained with UVES. There are no Ca II data available. Middle and lower rows: Ca II absorption spectra of QSO B2348-147,QSO J0103+1316, and QSO J1356-1101 obtained with UVES. There are no Na I data available. For all five sight lines we have no Effelsberg data.
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In the text

$\begin{figure} \par\includegraphics[width=17cm,clip]{9067f01.eps}\end{figure}$	Figure 1: HVC-all-sky map created by Westmeier (2007) derived from the data of the LAB Survey (Kalberla et al. 2005). The different symbols mark the positions of 103 sight lines that were observed with UVES. Along 35 lines of sight we detect Ca II/Na II absorption components. For 19 of them we have obtained additional H I observations with the Effelsberg 100-m telescope.
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9067f04.ps}\end{figure}$	Figure 4: The H I column density distribution observed with Effelsberg. The dashed line represents a power law fit over the range of column densities ( $\log (N_{\rm HI}/{\rm cm}^{-2})$ ) from 18.5 to 20. The vertical errorbars indicate Poisson errors.
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$\begin{figure} \par\includegraphics[width=8.4cm,clip]{9067f05.eps}\end{figure}$	Figure 5: Distribution of deviation velocities of the observed intermediate- and high-velocity absorbing systems versus galactic longitude and latitude. The dimensions of the triangles are proportional to the Ca II column densities observed with the UVES instrument. In the upper right corner of the diagram an exemplary Ca II column density of $N_{\rm CaII}=1 \times 10^{12}$ cm^-2 is shown.
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$\begin{figure} \par\includegraphics[width=7.4cm,clip]{9067f06.eps}\end{figure}$	Figure 6: Number of sight lines with intermediate- or high-velocity Ca II absorption lines versus deviation velocity.
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$\begin{figure} \par\includegraphics[width=7.7cm,clip]{9067f07.eps}\end{figure}$	Figure 7: Number of intermediate- and high-velocity Ca II absorption lines versus Doppler-parameter (b-value). The dashed vertical line indicates the UVES velocity resolution of $\Delta v_{\rm UVES} \approx 7~{\rm km~s}^{-1}$ .
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$\begin{figure} \par\includegraphics[width=14.4cm,clip]{9067f08.eps} \end{figure}$	Figure 8: Ca II and Na I absorption and H I emission spectra in the direction of the quasars QSO J0003-2323, J092913-021446, QSO J1344-1035, and QSO B1347-2457 obtained with UVES and the Effelsberg 100-m telescope, respectively. The absorption and corresponding emission lines are indicated by dashed lines.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f09.eps}\end{figure}$	Figure 9: Ca II and Na I absorption spectra of QSO J0153-4311, J222756-224302, QSO B0109-353, and QSO B0002-422 obtained with UVES. For these sight lines no Effelsberg data are available.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f10.eps}\end{figure}$	Figure 10: Ca II and Na I absorption spectra of QSO B1331+170+2411 J144653+011355, J143649-161341, and J123437-075843 obtained with UVES. Additionally the corresponding H I emission line profiles measured with the Effelsberg 100-m telescope are shown. The spikes in the Effelsberg spectra of J123437-075843 are radio frequency interferences (RFI).
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f11.eps}\end{figure}$	Figure 11: Ca II and Na I absorption spectra of QSO B0112-30, QSO B2314-409, QSO B0122-379, and QSO B0515-4414 obtained with UVES. For these sight lines no Effelsberg data are available.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f12.eps}\end{figure}$	Figure 12: Ca II and Na I absorption and corresponding H I emission spectra of QSO B1212+3326, QSO B1101-26, QSO 1448-232, and QSO J1232-0224 obtained with UVES and the Effelsberg 100-m telescope, respectively.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f13.eps}\end{figure}$	Figure 13: Ca II and Na I absorption spectra of QSO B0458-0203, QSO B1036-2257, QSO J1039-2719, and QSO J1211+1030 obtained with UVES. Additionally the corresponding H I emission line profiles measured with the Effelsberg 100-m telescope are shown.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f14.eps}\end{figure}$	Figure 14: Ca II and Na I absorption spectra of QSO J0139-0824, QSO J0105-1846, and QSO J2155-0922 obtained with UVES. No Effelsberg data are available.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f15.eps}\end{figure}$	Figure 15: Na I absorption and H I emission spectra in the direction of the quasars J081331+254503, QSO J0830+2411, and QSO B0450-1310B obtained with UVES and the Effelsberg 100-m telescope. For these sight lines no Ca II data are available.
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$\begin{figure} \par\includegraphics[width=14.5cm,clip]{9067f16.eps}\end{figure}$	Figure 16: Upper row: Na I absorption spectra of QSO B0216+0803 and QSO B0952+179 obtained with UVES. There are no Ca II data available. Middle and lower rows: Ca II absorption spectra of QSO B2348-147,QSO J0103+1316, and QSO J1356-1101 obtained with UVES. There are no Na I data available. For all five sight lines we have no Effelsberg data.
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