Probing the parameter space of HD 49933: A comparison between global and local methods

Bibcode
2011JPhCS.271a2038C
DOI
10.1088/1742-6596/271/1/012038
Creevey, O. L.; Bazot, M.
Bibliographical reference

Journal of Physics: Conference Series, Volume 271, Issue 1, pp. 012038 (2011).

Advertised on:
1
2011
Number of authors
2
IAC number of authors
0
Citations
7
Refereed citations
7
Description
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&sun; 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.
Type
Non-refereed

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