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Spectroscopy of ε Aurigae during the 2009-2011 eclipse

The results of the spectral observations of a unique eclipsing system ε Aurigae obtained during the recent eclipse are presented. We traced the spectral lines variations at different eclipse phases. The part of these changes is the result of the absorption of stellar radiation by the gas component of circumstellar (CS) disk around the secondary. The other part arises due to the obscuration of the stellar photosphere and the closest circumstellar area by the dusty CS disk. Comparison of our results with the previous one, obtained by Lambert & Sawyer during the 1982-1984 eclipse, indicates the good agreement, and argues in favor of stability of the secondary disk structure. On the base of the new observational data we provide a new mass estimation of the system components.

preprint2013arXivOpen access
I. S. PotravnovV. P. Grinin
astro-ph.SR
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I. S. PotravnovV. P. Grinin

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