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Spectral observations of the symbiotic Mira variable V407 Cyg in 1993–2002 |
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| Authors: | A. A. Tatarnikova P. M. Marrese U. Munari T. Tomov B. F. Yudin |
| Affiliation: | (1) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119899, Russia;(2) Astronomical Observatory, Padua, Asiago, Italy;(3) Astronomical Center, Copernicus University, Torun, Poland |
| Abstract: | We present high-and low-resolution spectral observations of the symbiotic Mira variable V407 Cyg obtained in 1993–2002. Both emission and absorption spectra of the star are analyzed in detail. We present the basic spectral parameters for three states of the hot component of V407 Cyg—its passive and quiescent states and an outburst in 1998—and study the evolution of the emission-line profiles during transitions from one state to another. |
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