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

Abstract

In this paper, we argue that in the symbiotic star RR Tel the existence of an accretion disk around the hot companion is strongly implied by the characteristic features exhibited by the Raman-scattered O VI lines around 6830 Åand 7088 Å. High degrees of polarization and double-peaked profiles in the Raman-scattered lines and single-peak profiles for other emission lines are interpreted as line-of-sight effects, where the H I scatterers near the giant see an incident double-peaked profile and an observer with a low inclination sees single-peak profiles. It is predicted that different mass concentrations around the accretion disk formed by a dusty wind may lead to the disparate ratios of the blue peak strength to the red counterpart observed in the 6830 and 7088 features. We discuss the evolutionary links between symbiotic stars and bipolar protoplanetary nebulae and conclude that the Raman scattering processes may play an important role in investigation of the physical properties of these objects.

11 pages, 3 figures, accepted for publication in the ApJ Letters

References in corpus (2)

• On the Profiles and Polarization of Raman Scattered Emission Lines in Symbiotic Stars:II. Numerical Simulations
• On the Polarization of H-alpha Lines Scattered by Neutral Hydrogen in Active Galactic Nuclei

Cited by in corpus (19)

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• A Search for Rapid Photometric Variability in Symbiotic Binaries
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• Raman Scattered O VI $\lambda$ 6825 and the Accretion Disk Emission Model in the Symbiotic Stars V1016 Cygni and HM Sagittae
• AG Pegasi - now a classical symbiotic star in outburst?
• Dynamics of Hot Accretion Flow with Thermal Conduction
• Why Every Bipolar Planetary Nebula is `Unique'
• Polarisation of the Broad H alpha Wing in Symbiotic Stars
• Raman Scattered HeII 6545 in the Young and Compact Planetary Nebula NGC 6790
• Raman Scattered He II $\lambda$ 6545 Line in the Symbiotic Star V1016 Cygni
• Phase-Resolved Infrared Spectroscopy and Photometry of V1500 Cygni, and a Search for Similar Old Classical Novae
• Profiles of the Resonance Doublets Formed in Bipolar Winds in Symbiotic Stars
• Stellar Wind Accretion and Raman Scattered O VI Features in the Symbiotic Star AG Draconis
• Raman Scattered Ne VII$\lambda$973 at 4881 Å in the Symbiotic Star V1016 Cygni
• A Monte Carlo Study of Flux Ratios of Raman Scattered O~VI Features at 6825 Å and 7082 Å in Symbiotic Stars
• The H$\alpha$ and H$\beta$ Raman-scattering line profiles of the symbiotic star AG Peg
• Raman-scattered O VI features in the symbiotic nova RR Telescopii
• Planetary Nebulae in the Scheme of Binary Evolution