TY - JOUR
T1 - Probing the parameter space of HD 49933
T2 - A comparison between global and local methods
AU - Creevey, O. L.
AU - Bazot, M.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1088/1742-6596/271/1/012038
DO - 10.1088/1742-6596/271/1/012038
M3 - Article
AN - SCOPUS:79953127127
SN - 1742-6588
VL - 271
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012038
ER -