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| Paper: |
Asteroseismology of Exoplanet-host Stars: The Helium Problem and Other Associated Effects |
| Volume: |
462, Progress in Solar/Stellar Physics with Helio- and Asteroseismology |
| Page: |
74 |
| Authors: |
Vauclair, S. |
| Abstract: |
More than 500 planets are presently known to orbit around stars other than the Sun. The characterization of these planetary systems
needs a precise determination
of the parameters of the central stars (masses, radii, ages, abundances, etc.). In this framework, asteroseismology represents an important tool which may lead
to a precision never reached
before. At the present time, with large databases,
automatic solutions are sought for these parameter determinations.
However systematic uncertainties do remain and the final models are not unique, due to several problems including the internal helium abundance. Detailed studies of individual stars
help find solutions to such difficulties.
Here I discuss some details about the characterization of exoplanet-host stars from
asteroseismology and the importance of the helium and heavy element abundances in this respect. |
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