All Figures

$\begin{figure} \par\includegraphics[angle=-90,width=15.85cm,clip]{7554fig1.eps}\... ...{0.3cm} \includegraphics[angle=-90,width=15.85cm,clip]{7554fig2.eps}\end{figure}$ Figure 1: The ²⁸SiO v = 1 ( upper panel) and v = 2 ( lower panel) J = 1-0 maser emission in R Leo. Each figure shows the integrated intensity map in Jy beam^-1 km s^-1 units, the spectra of the individual maser components, the total power spectrum and the emission in the map, and their ratio. For some maser components, the intensity has been divided by a factor of 2 or 3 to facilitate the comparison with the other spectra. The vertical dashed lines indicate the systemic velocity of the source, $V\rm{_{LSR}}$ = -0.5 km s^-1 (Bujarrabal et al. 1989). Circles represent the fits for the masing regions (dashed: mean radius $\bar{R}$ , continuous: $R_{{\rm out}}$ and $R_{{\rm in}}$ defined as $\bar{R}$ $\pm$ $\frac{1}{2}\triangle{R}$ ) (see Sect. 3). The peak intensity is 28.45 Jy beam^-1 km s^-1 (v = 1) and 53.5 Jy beam^-1 km s^-1 (v = 2), and the shown contour is equivalent to the 5 $\sigma$ level, with $\sigma$ = 0.4 Jy beam^-1 km s^-1 (v = 1) and $\sigma$ = 0.7 Jy beam^-1 km s^-1 (v = 2).
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=14.95cm,clip]{7554fig3.eps}\... ...{0.3cm} \includegraphics[angle=-90,width=14.55cm,clip]{7554fig4.eps}\end{figure}$ Figure 2: Same as Fig. 1 for the ²⁸SiO v = 1 J = 2-1 ( upper panel) and ²⁹SiO v = 0 J = 1-0 ( lower panel) maser emission in R Leo. The peak intensity is 6.03 Jy beam^-1 km s^-1 (²⁸SiO) and 0.26 Jy beam^-1 km s^-1 (²⁹SiO), and the shown contour is equivalent to the 5 $\sigma$ level, with $\sigma$ = 0.08 Jy beam^-1 km s^-1 (²⁸SiO) and $\sigma$ = 0.01 Jy beam^-1 km s^-1(²⁹SiO).
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In the text