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In this paper, we argue that in the symbiotic star RR Tel the existence of anaccretion disk around the hot companion is strongly implied by thecharacteristic features exhibited by the Raman-scattered O VI lines around 6830\AA and 7088 \AA. High degrees of polarization and double-peaked profiles inthe Raman-scattered lines and single-peak profiles for other emission lines areinterpreted as line-of-sight effects, where the H I scatterers near the giantsee an incident double-peaked profile and an observer with a low inclinationsees single-peak profiles. It is predicted that different mass concentrationsaround the accretion disk formed by a dusty wind may lead to the disparateratios of the blue peak strength to the red counterpart observed in the 6830and 7088 features. We discuss the evolutionary links between symbiotic starsand bipolar protoplanetary nebulae and conclude that the Raman scatteringprocesses may play an important role in investigation of the physicalproperties of these objects.Comment: 11 pages, 3 figures, accepted for publication in the ApJ Letter

Toward the Evidence of the Accretion Disk Emission in the Symbiotic Star RR Telescopii