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Fig. 9


Evolutionary track of representative models of the red-giant stars with [MH] = −0.37 star in the Teff- logg plane. The black solid and red dotted lines represent the evolution of a 1.39 M star computed assuming a grey atmosphere or a fit to realistic PHOENIX model atmospheres as an outer boundary condition to the stellar structure equations, respectively. The grey dashed line is also computed with PHOENIX atmospheres and assuming a reduced mass of 1.18 M. The positions of the primary and the secondary components of KIC 9163796 along this evolutionary track from spectroscopic parameters are marked in blue and red, respectively.

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