O. L. Creevey, M. Bazot

Abstract
We present two independent methods for studying the global stellar parameter space (mass M, age, chemical composition X₀, Z₀) of HD 49933 with seismic data. Using a local minimization and an MCMC algorithm, we obtain consistent results for the determination of the stellar properties: M = 1.1–1.2 M_☉, Age ~ 3.0 Gyr, Z₀ ~ 0.008. A description of the error ellipses can be defined using Singular Value Decomposition techniques, and this is validated by comparing the errors with those from the MCMC method.

Journal of Physics: Conference Series
GONG–SoHO 24: A new era of seismology of the sun and solar-like stars
T. Appourchaux, A. Baglin, W. Chaplin, J. Christensen-Dalsgaard, L. Gizon, M. Thompson, T. Sekii, J. Leibacher

IOP Publishing
Volume 271, Number 1, Page 012038_1
2011 January

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