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. ©2010. The American Astronomical Society. All rights reserved.
Montalban J., Miglio A., Noels A., Scuflaire R., Ventura P. (2010). Seismic diagnostics of red giants: First comparison with stellar models. THE ASTROPHYSICAL JOURNAL LETTERS, 721(2), 182-188 [10.1088/2041-8205/721/2/L182].
Seismic diagnostics of red giants: First comparison with stellar models
Miglio A.;
2010
Abstract
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. ©2010. The American Astronomical Society. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
