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Expected oscillation parameters for red giants from dynamical masses and radii
oleh: Themeßl Nathalie, Hekker Saskia
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2017-01-01 |
Deskripsi
Stellar masses and radii of stars with stochastic (solar-like) oscillations can be derived using asteroseismic scaling relations. Here, we predict the asteroseismic observables using the dynamical masses and radii from red-giants in eclipsing binary systems. We show that the predicted frequency of maximum oscillation power (νmax) is generally lower than the observed one, while the predicted large frequency separation (Δν) is in most cases larger than the observed value. This shows that both the scaling relations for Δν and νmax used with solar references contribute to the observed differences between dynamical and asteroseismically determined masses and radii.