B. Mauclaire, C. Buil, T. Garrel, R. Leadbeater, A. Lopez
We present and analyze epsilon Aurig\ae\ data concerning the evolution of the H{\alpha} line on the occasion of the 2009 International observation campaign launched to cover the eclipse of this object. We visually inspect the dynamical spectrum constructed from the data and analyze the evolution with time of the EW (Equivalent Width) and of the radial velocity. The spectroscopic data reveal many details which confirm the complexity of the Aurig\ae\ system. The object is far from being understood. In particular, according to our measurements, the eclipse duration has been underestimated. A complete analysis of details revealed by our data would require much time and effort. Observers are encouraged to continue monitoring the H{\alpha} line out of eclipse in the hope that it will provide further important information.
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http://arxiv.org/abs/1207.0795
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