In the context of the determination of stellar properties using
asteroseismology, we study the influence of rotation and convective-core
overshooting on the properties of red-giant stars. We used models in order to
investigate the effects of these mechanisms on the asymptotic period spacing of
gravity modes (ΔΠ1) of red-giant stars that ignite He burning in
degenerate conditions (M≲2.0 M⊙). We also compare the
predictions of these models with Kepler observations. For a given Δν,
ΔΠ1 depends not only on the stellar mass, but also on mixing
processes that can affect the structure of the core. We find that in the case
of more evolved red-giant-branch (RGB) stars and regardless of the transport
processes occurring in their interiors, the observed ΔΠ1 can provide
information as to their stellar luminosity, within ~10-20%. In general, the
trends of ΔΠ1 with respect to mass and metallicity that are observed
in Kepler red-giant stars are well reproduced by the models.Comment: 5pages, 6 figure