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사범대학
과학교육과
Journal papers
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The high resolution spectra of symbiotic star CH Cygni in 2004
Title
The high resolution spectra of symbiotic star CH Cygni in 2004
Authors
Yoo K.H.
Ewha Authors
유계화
SCOPUS Author ID
유계화
Issue Date
2006
Journal Title
New Astronomy
ISSN
1384-1076
Citation
New Astronomy vol. 11, no. 5, pp. 359 - 365
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
High resolution spectra of the symbiotic star CH Cygni secured at the Bohyunsan Astronomy Observatory (BOAO) in April 2004 are discussed. In this phase, while CH Cygni was in quiescence photometrically, H I lines had complicate emission and absorption components, while [O III] lines had emission components and Na I D lines had absorption components. We measured radial velocities for emission and absorption components of these lines. The lines were also de-convoluted and fitted with multi-Gaussian functions to study a relationship between line shapes and geometrical arrangements of the line source. Results are discussed in terms of an accretion disk model and a gaseous envelope surrounding the system. © 2005 Elsevier B.V. All rights reserved.
DOI
10.1016/j.newast.2005.10.002
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