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Origin of Circumstellar Matter in the Spectroscopic Binary CX Dra

Published online by Cambridge University Press:  12 April 2016

Hidetoshi Iwamatsu ,
Ryuko Hirata  and
Seiji Masuda
Hidetoshi Iwamatsu
Affiliation:
Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan
Ryuko Hirata
Affiliation:
Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan
Seiji Masuda
Affiliation:
Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan

Abstract

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We examine the periodic component in the polarization of CX Dra, a spectroscopic binary with an orbital period of 7 days. We find that this component originates in dense matter located in the direction preceding the secondary by about 4.5° from the primary-secondary direction. This dense scattering region is attributable to the region where the Hα emission peak is formed, i.e. the gas stream or hot spot on the accretion disk of the primary. Its mass is estimated as 1.3 · 10−11M⊙ in its well developed phase.

Type
7. Interacting Binaries
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 701 - 704
Copyright
Copyright © Astronomical Society of the Pacific 2000

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