| Issue |
A&A
Volume 441, Number 3, October III 2005
|
|
|---|---|---|
| Page(s) | 1079 - 1086 | |
| Section | Stellar structure and evolution | |
| DOI | https://doi.org/10.1051/0004-6361:20042348 | |
| Published online | 23 September 2005 | |
Asteroseismic diagrams for solar-type stars
1
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium e-mail: anwesh.mazumdar@ster.kuleuven.ac.be
2
Observatoire de Paris, LESIA, CNRS UMR 8109, 92195 Meudon, France
Received:
9
November
2004
Accepted:
18
June
2005
We explore the feasibility of applying the Christensen-Dalsgaard diagram to real
asteroseismic data and provide quantitative measures of the uncertainty
associated with the results. We also propose a new kind of seismic
diagram, based on the determination of the locations of sharp acoustic
features inside a star. We show that by combining the information about
the position of the base of the convective envelope or the 
ionisation zone with a measure of the average large separation, it is
possible to constrain the unknown chemical composition or the various
parameters characterising the physical processes in the stellar
interior. We demonstrate the application of this technique to the
analysis of mock data for a CoRoT target star.
Key words: stars: oscillations / stars: interiors
© ESO, 2005
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