SEISMIC DIAGNOSTICS OF RED GIANTS: FIRST COMPARISON WITH STELLAR MODELS
- Institut d'Astrophysique et Geophysique de l'Universite de Liege, Allee du six Aout, 17 B-4000 Liege (Belgium)
- Osservatorio Astronomico di Roma-INAF, via Frascati 33, Monteporzio Catone, Rome (Italy)
The clear detection with CoRoT and KEPLER of radial and non-radial solar-like oscillations in many red giants paves the way for seismic inferences on the structure of such stars. We present an overview of the properties of the adiabatic frequencies and frequency separations of radial and non-radial oscillation modes for an extended grid of models. We highlight how their detection allows a deeper insight into the internal structure and evolutionary state of red giants. In particular, we find that the properties of dipole modes constitute a promising seismic diagnostic tool of the evolutionary state of red giant stars. We compare our theoretical predictions with the first 34 days of KEPLER data and predict the frequency diagram expected for red giants in the CoRoT exofield in the galactic center direction.
- OSTI ID:
- 21452778
- Journal Information:
- Astrophysical Journal Letters, Vol. 721, Issue 2; Other Information: DOI: 10.1088/2041-8205/721/2/L182; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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