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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