Complex asteroseismology of the hybrid B‐type pulsatorγPegasi: A test of stellar opacities

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Abstract
Using the updated oscillation spectrum ofγPegasi, we construct a set of seismic models which reproduce two pulsational frequencies corresponding to the ℓ = 0, p1and ℓ = 1, g1modes. Then, we single out models which reproduce other well identified modes. Finally, we extend our seismic modelling by a requirement of fitting also values of the complex, nonadiabatic parameterfassociated to each mode frequency. Such complex asteroseismology of the B‐type pulsators provides a unique test of stellar metallicity and opacities. In contrast to our previous studies, results forγPeg indicate that both opacity tables, OPAL and OP, are equally preferred

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