Probing the parameter space of HD 49933

A comparison between global and local methods

O. L. Creevey, Michael Bazot

    Research output: Contribution to journalArticle

    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.

    Original languageEnglish (US)
    Article number012038
    JournalJournal of Physics: Conference Series
    Volume271
    Issue number1
    DOIs
    StatePublished - Jan 1 2011

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    ellipses
    chemical composition
    decomposition
    optimization

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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    Probing the parameter space of HD 49933 : A comparison between global and local methods. / Creevey, O. L.; Bazot, Michael.

    In: Journal of Physics: Conference Series, Vol. 271, No. 1, 012038, 01.01.2011.

    Research output: Contribution to journalArticle

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