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On The Profiles and The Polarization of Raman Scattered Emission Linesin the Symbiotic Stars: II

Published online by Cambridge University Press:  14 August 2015

K.W. Lee
Affiliation:
Kyungpook National Univ., Taegu 702-701, South KOREA [email protected]
H.-W. Lee
Affiliation:
Seoul National Univ., Seoul 151-742, South KOREA hwleeUastro9.snu.ac.kr

Extract

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A Monte Carlo code is used to calculate the profiles and the polarization of Raman scattered O VI lines(λλ6827, 7088) in symbiotic stars. Various wind models around the cool giant are investigated including disk type and bipolar wind models. We obtain a large degree of polarization in the blue part and the red-asymmetric profile, which is generic to the Raman scattered feature in symbiotic stars.

We also investigate the effect of the orbital motion of the hot component around the cool giant, where the orbital velocity is comparable to the wind terminal velocity. In the case of small inclination angle of the orbitalplane, we obtain the polarization flip around the red wing of the scatteredfeature and the triple peak structure in the polarized flux, which is characteristic of many symbiotic systems including RR Tel.

Brief observational consequences are discussed and it is concluded that spectropolarimetry may provide a powerful diagnostic about the physical conditions of symbiotic stars.

Type
II. Joint Discussions
Copyright
Copyright © Kluwer 1998