Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..225m&link_type=abstract
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,
Astronomy and Astrophysics
Astrophysics
Stars: Oscillations, Stars: Interiors, Stars: Evolution, Stars:Late-Type, Methods: Data Analysis
Scientific paper
The CoRoT and Kepler missions provide us with thousands of red giant light curves that allow a very precise asteroseismic study of these objects. Before these space missions, the red giant oscillation patterns remained obscure. Now, these spectra are completely clear. Moreover, they unveil many crucial interior structure properties. For thousands of red giants, we can derive from the seismic data: precise estimates of the stellar mass and radius, the evolutionary status of the giants (with a clear difference between clump and RGB stars), the internal differential rotation, the mass loss, the distance of the stars... Analyzing this large amount of information is made easy by the identification of the largely homologous red giant oscillation pattern. This allows us, for instance, to identify rotation scaling relations, or to measure the mode visibility and the bolometric amplitudes. Fine details completing the red giant oscillation pattern then provide further information for a more detailed view on the interior structure.
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