Emission line variability in the spectrum of V417 Centauri

Autor:	Stoyanov, K. A., Zamanov, R. K., Bode, M. F., Pritchard, J., Tomov, N. A., Gomboc, A., Koleva, K.
Rok vydání:	2014
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	We report high resolution spectral observations of the yellow symbiotic star V417 Cen obtained in 2004. We find that the equivalent widths of the emission lines decreased, while the brightness increased. The FWHMs and wavelengths of the emission lines do not change. We estimated the interstellar extinction towards V417 Cen as $E_{B-V}$ = 0.95 $\pm$0.10, using the KI interstellar line. Using the [O III] lines, we obtain a rough estimation of the density and the temperature in the forbidden lines region $\log N_e \approx 4.5 \pm$ 0.5 and $T_e=100000 \pm 25000$~K. Tidal interaction in this binary is also discussed. Comment: 11 pages, 4 figures, submitted to BAJ
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1403.6603 Zobrazit plný text záznamu View this record from Arxiv