Online Material

Table 1: Log of spectroscopic observations of RS Oph.

$\begin{figure} \par\resizebox{9cm}{!}{\includegraphics{11436f01.eps}} \end{figure}$	Figure 1: Profile of H $\alpha$ on Feb. 18. The unit of the ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f02.eps}} \end{figure}$	Figure 2: Profile of He I 5876 on Feb. 18. The unit of the ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f03.eps}} \end{figure}$	Figure 3: Profile of [N II] 5755 on Feb. 18. The unit of the ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f04.eps}} \end{figure}$	Figure 4: Profiles of Fe II lines on Feb. 18. The unit of the ordinate is 10^-11erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f05.eps}} \end{figure}$	Figure 5: Profile of H $\beta$ on Feb. 19. The unit of the ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f06.eps}} %\end{figure}$	Figure 6: Profile of He I 5876 on Feb. 19. The unit of the ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f07.eps}} %\end{figure}$	Figure 7: High dispersion spectrum on Feb. 19: 4620-4720Å. The unit of ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f08.eps}} %\end{figure}$	Figure 8: High dispersion spectrum on Feb. 19: 4930-5030Å. The unit of ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f09.eps}} %\end{figure}$	Figure 9: Medium dispersion blue spectrum on March 6. The unit of ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f10.eps}} \end{figure}$	Figure 10: Medium dispersion red spectrum on March 6. The unit of ordinate is 10^-11 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f11.eps}} % \end{figure}$	Figure 11: High dispersion spectrum on March 20: 4620-4720 Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f12.eps}} %\end{figure}$	Figure 12: Profile of H $\beta$ on March 20. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f13.eps}} %\end{figure}$	Figure 13: High dispersion spectrum on March 20: 4930-5030Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f14.eps}} %\end{figure}$	Figure 14: High dispersion spectrum on March 20: 5280-5390Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f15.eps}} %\end{figure}$	Figure 15: High dispersion spectrum on March 20: 5690-5810Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f16.eps}} %\end{figure}$	Figure 16: Profile of He I 5876 on March 20. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f17.eps}} %\end{figure}$	Figure 17: Medium dispersion blue spectrum on April 4. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f18.eps}} %\end{figure}$	Figure 18: Medium dispersion red spectrum on April 4. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f19.eps}} \end{figure}$	Figure 19: Medium dispersion red spectrum on April 24. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f20.eps}} \end{figure}$	Figure 20: High dispersion spectrum on April 8: 4620-4720Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f21.eps}} \end{figure}$	Figure 21: High dispersion spectrum on April 8: profile of H $\beta$ . The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f22.eps}} \end{figure}$	Figure 22: High dispersion spectrum on April 8: 4930-5030Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f23.eps}} \end{figure}$	Figure 23: High dispersion spectrum on April 8: 5280-5390Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f24.eps}} \end{figure}$	Figure 24: High dispersion spectrum on April 8: 5690-5810Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f25.eps}} \end{figure}$	Figure 25: High dispersion spectrum on April 8: 5840-5960Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f26.eps}} \end{figure}$	Figure 26: High dispersion spectrum on May 17: profile of He II 4686. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f27.eps}} \end{figure}$	Figure 27: High dispersion spectrum on May 17: profile of H $\beta$ . The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f28.eps}} \end{figure}$	Figure 28: High dispersion spectrum on May 17: 4930-5030Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f29.eps}} \end{figure}$	Figure 29: High dispersion spectrum on May 17: 5280-5390Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f30.eps}} \end{figure}$	Figure 30: High dispersion spectrum on May 17: 5690-5810Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f31.eps}} \end{figure}$	Figure 31: High dispersion spectrum on May 17: 5840-5955Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f32.eps}} \end{figure}$	Figure 32: High dispersion spectrum on May 17: 6000-6120Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f33.eps}} \end{figure}$	Figure 33: High dispersion spectrum on May 17: 6340-6470Å. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f34.eps}} \end{figure}$	Figure 34: Medium dispersion blue spectrum on May 26. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f35.eps}} \end{figure}$	Figure 35: Medium dispersion red spectrum on May 25. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f36.eps}} \end{figure}$	Figure 36: High dispersion spectrum on August 31: 4620-4720Å. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f37.eps}} \end{figure}$	Figure 37: High dispersion spectrum on August 31: profile of H $\beta$ . The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f38.eps}} \end{figure}$	Figure 38: High dispersion spectrum on August 31: 4930-5030Å. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f39.eps}} \end{figure}$	Figure 39: High dispersion spectrum on August 31: 5280-5390. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f40.eps}} \end{figure}$	Figure 40: High dispersion spectrum on August 31: 5690-5805Å. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f41.eps}}\end{figure}$	Figure 41: High dispersion spectrum on August 31: 5840-5960. The unit of the ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f42.eps}} \end{figure}$	Figure 42: Medium dispersion blue spectrum on September 9. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f43.eps}} \end{figure}$	Figure 43: Medium dispersion red spectrum on September 12. The unit of ordinate is 10^-12 erg cm^-2 s^-1 Å^-1.
Open with DEXTER

$\begin{figure} \resizebox{9cm}{!}{\includegraphics{11436f44.eps}} \end{figure}$	Figure 44: Medium dispersion blue spectrum on October 29. The unit of ordinate is 10^-13 erg cm^-2 s^-1 Å^-1.
Open with DEXTER