ASTEROSEISMOLOGY OF EVOLVED STARS WITH KEPLER : A NEW WAY TO CONSTRAIN STELLAR INTERIORS USING MODE INERTIAS - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue The Astrophysical journal letters Année : 2014

ASTEROSEISMOLOGY OF EVOLVED STARS WITH KEPLER : A NEW WAY TO CONSTRAIN STELLAR INTERIORS USING MODE INERTIAS

T. Bedding
  • Fonction : Auteur
M. Di Mauro
  • Fonction : Auteur
B. Mosser
  • Fonction : Auteur
M. Goupil
  • Fonction : Auteur
R. Samadi
  • Fonction : Auteur
R. Garcia

Résumé

Asteroseismology of evolved solar-like stars is experiencing a growing interest due to the wealth of observational data from space-borne instruments such as the CoRoT and Kepler spacecraft. In particular, the recent detection of mixed modes, which probe both the innermost and uppermost layers of stars, paves the way for inferring the internal structure of stars along their evolution through the subgiant and red giant phases. Mixed modes can also place stringent constraints on the physics of such stars and on their global properties (mass, age, etc...). Here, using two Kepler stars (KIC 4351319 and KIC 6442183), we demonstrate that measurements of mixed mode characteristics allow us to estimate the mode inertias, providing a new and additional diagnostics on the mode trapping and subsequently on the internal structure of evolved stars. We however stress that the accuracy may be sensitive to non-adiabatic effects.
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Dates et versions

hal-02550781 , version 1 (21-08-2020)

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O. Benomar, K. Belkacem, T. Bedding, D. Stello, M. Di Mauro, et al.. ASTEROSEISMOLOGY OF EVOLVED STARS WITH KEPLER : A NEW WAY TO CONSTRAIN STELLAR INTERIORS USING MODE INERTIAS. The Astrophysical journal letters, 2014, 781 (2), pp.L29. ⟨10.1088/2041-8205/781/2/L29⟩. ⟨hal-02550781⟩
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