All Figures

$\begin{figure} \par\includegraphics[angle=-90,width=11cm,clip]{9412fig1.ps}\par\includegraphics[angle=-90,width=11cm,clip]{9412fig2.ps}\end{figure}$ Figure 1: Top: integrated CO(2-1) intensity (contours) superposed on an H $\alpha$ image (Conselice et al. 2001) of NGC 1275. The inteferometer data were averaged over velocity offsets from -180 to -5 kms^-1. Contour steps are 1.6 Jy kms^-1 beam^-1. The white circle shows the interferometer primary beam, and the grey ellipse at lower left, within the circle, shows the synthesized beam of $2.7''\times 2.5''$ for the merged single-dish+inteferometer data. The CO spectra are from single pixels in regions A, B and C. The CO(2-1) spectrum of region D, the center of NGC 1275, is from the single-dish data only, and indicates an even larger amount of molecular gas in the galaxy's center, with a much greater line width than in the filaments. Intensities of the spectra are in mJy in the 2.7'' beam, except for region D, which is in units of mJy in the single-dish 11'' beam (black circle around region D). Velocity offsets are relative to 226.559 GHz. Bottom: integrated CO(2-1) intensity superposed on the hot gas mass distribution derived from 0.5 keV X-ray observations of NGC 1275, from Fabian et al. (2006). CO contours, primary beam and synthesized beam are as marked in the upper diagram.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=7.7cm,clip]{9412fig3.eps}\pa... ...pace*{2mm}\includegraphics[angle=-90,width=7.9cm,clip]{9412fig4.eps}\end{figure}$ Figure 2: Upper: mean CO(2-1) intensity along the filament, with contour steps of 0.5 Jy kms^-1 beam^-1. Lower: isovelocity contours, in steps of 10 kms^-1. The lines labeled 1 to 4 mark the position-velocity slices in Fig. 3. The beam ( lower left) is $2.2''\times 2.0''$ .
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=7.4cm,clip]{9412fig5.eps}\pa... ...pace*{3mm}\includegraphics[angle=-90,width=7.1cm,clip]{9412fig6.eps}\end{figure}$ Figure 3: P-V plots of CO(2-1) parallel to the CO filament's major axis (PA +70 $^\circ$ ; upper panels) and minor axis (PA $-20^\circ$ ; lower panels). Panel numbers 1 to 4 correspond to the lines in Fig. 1. Labels A, B, C indicate the CO peaks (Figs. 1 and 3). Contours are by 8 mJy/beam.
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In the text

$\begin{figure} \par\includegraphics[width=14.5cm, angle=-90,clip]{9412fig7.eps}\end{figure}$ Figure 4: CO(2-1) maps, centered on the eastern filaments of NGC 1275, and binned in 21.2 kms^-1 channels to show the main clumps, numbered as in Table 1. Contour steps are 8.9 mJy beam^-1 (4 $\sigma$ ). The beam is $2.2''\times 2.0''$ . Position offsets are relative to the map center at 03 $^{\rm h}$ 19 $^{\rm m}$ 50.0 $^{\rm s}$ , +41 $^\circ$ 30'47.0'' (J2000), marked with a cross. Velocity offsets ( upper left corners) are relative to 226.559 GHz.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=9cm,clip]{9412fig8.eps}\end{figure}$ Figure 5: Left: surface density of cool gas in simulated filaments in model 2 of Revaz et al. (2008), at $t=250~\rm {Myr}$ . The model filament is inclined at 10 $^\circ$ to the observer's line of sight. Right: position-velocity diagram for the same filament. The red box shows a p-v sector in the model that is comparable to that of the eastern filament region observed in CO.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=7.7cm,clip]{9412fig3.eps}\pa... ...pace*{2mm}\includegraphics[angle=-90,width=7.9cm,clip]{9412fig4.eps}\end{figure}$	Figure 2: Upper: mean CO(2-1) intensity along the filament, with contour steps of 0.5 Jy kms^-1 beam^-1. Lower: isovelocity contours, in steps of 10 kms^-1. The lines labeled 1 to 4 mark the position-velocity slices in Fig. 3. The beam ( lower left) is $2.2''\times 2.0''$ .
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$\begin{figure} \par\includegraphics[angle=-90,width=7.4cm,clip]{9412fig5.eps}\pa... ...pace*{3mm}\includegraphics[angle=-90,width=7.1cm,clip]{9412fig6.eps}\end{figure}$	Figure 3: P-V plots of CO(2-1) parallel to the CO filament's major axis (PA +70 $^\circ$ ; upper panels) and minor axis (PA $-20^\circ$ ; lower panels). Panel numbers 1 to 4 correspond to the lines in Fig. 1. Labels A, B, C indicate the CO peaks (Figs. 1 and 3). Contours are by 8 mJy/beam.
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$\begin{figure} \par\includegraphics[angle=-90,width=9cm,clip]{9412fig8.eps}\end{figure}$	Figure 5: Left: surface density of cool gas in simulated filaments in model 2 of Revaz et al. (2008), at $t=250~\rm {Myr}$ . The model filament is inclined at 10 $^\circ$ to the observer's line of sight. Right: position-velocity diagram for the same filament. The red box shows a p-v sector in the model that is comparable to that of the eastern filament region observed in CO.
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