All Figures

$\begin{figure} {\psfig{figure={5549fig1.ps},width=8cm,angle=0} } \end{figure}$ Figure 1: FUV contours overlaid on a grey-scale representation of the H I integrated intensity map of the Western part of the inner disk of M 81. Overlaid are the fields of our NRO and OVRO observations, as well as the fields observed by Brouillet et al. (1998, labelled B98), and by Taylor & Wilson (1998; labelled TW98). Contour levels for the FUV are 2.3, 3.1, 4.6, 6.2, 7.7, 9.2, 13.9, 18.5 and $36.9 \times 10^{-18}$ erg cm^-2 s^-1 Å^-1 arcsec^-2. Grey levels for the H I vary linearly from 1.5 (light) to $7.3 \times 10^{21}$ atoms ${\rm cm^{-2}}$ (dark). FUV and H I data from AKBS97.
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In the text

$\begin{figure} {\psfig{figure={5549fig2.ps},width=15.7cm,angle=270} } \end{figure}$ Figure 2: The region of the spiral arm in M 81 studied in the present paper. Contours in all three panels are of the FUV emission, and contour levels are 2.3, 3.1, 4.6, 6.2, 7.7, 9.2, 13.9, 18.5 and $36.9 \times 10^{-18}$ erg cm^-2 s^-1 Å^-1 arcsec^-2. The contours are overlaid on grey scale representations of the FUV ( left panel, grey levels from 0.8 [light] to $15\times 10^{-18}$ erg cm^-2 s^-1 Å^-1 arcsec^-2 [dark]); H $\alpha$ ( middle panel; grey levels from 0.5 to $95\times 10^{-17}$ erg cm^-2 s^-1 arcsec^-2); and H I ( right panel, grey levels from 1.5 to $7.3 \times 10^{21}$ atoms cm^-2). The positions of our three most credible CO detections from our NRO observations (B, C, and D in Fig. 3) are indicated in each panel by open star symbols. Centre positions of the dust filaments as measured by Kaufman et al. (1989) are indicated by the line segments drawn in the middle panel.
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In the text

$\begin{figure} \par {\psfig{figure={5549fig3.ps},width=8cm,angle=0} } \end{figure}$ Figure 3: Positions of the NRO 45 m beam pointings, overlaid on the H I map as shown in the right panel of Fig. 2. Grey levels as in Fig. 2. Letters denote positions where CO was detected (see text); less secure detections are denoted by letters in parentheses.
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In the text

$\begin{figure} {\psfig{figure={5549fig4.ps},width=7.8cm,angle=0} } \end{figure}$ Figure 4: Final CO(1-0) spectra from NRO (drawn lines), smoothed to ${\rm d}v=10$ km s^-1 velocity resolution. Letters in this figure correspond to positions of the telescope pointing as shown in Table 1 and Fig. 3, with the (0,0) offset corresponding to position RA =09h50m44.0s, Dec =69d17m30s (B1950). They indicate spectra discussed in more detail in the paper; less secure detections are denoted by letters in parentheses. The dotted lines indicate H I spectra, on an arbitrary scale, at the same position.
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In the text

$\begin{figure} \par {\psfig{figure={5549fig3.ps},width=8cm,angle=0} } \end{figure}$	Figure 3: Positions of the NRO 45 m beam pointings, overlaid on the H I map as shown in the right panel of Fig. 2. Grey levels as in Fig. 2. Letters denote positions where CO was detected (see text); less secure detections are denoted by letters in parentheses.
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