✦ LIBER ✦

The high resolution spectra of symbiotic star CH Cygni in 2004

✍ Scribed by Kye Hwa Yoo

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 179 KB
Volume: 11
Category: Article
ISSN: 1384-1076
DOI: 10.1016/j.newast.2005.10.002

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✦ Synopsis

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.

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