Non-adiabatic study of the Kepler subgiant KIC 6442183

M. Grosjean, M. A. Dupret, K. Belkacem, O. Benomar, S. Deheuvels, R. Samadi, A. Grigahcene

Research output: Contribution to journalConference article

Abstract

Thanks to the precision of Kepler observations, [3] were able to measure the linewidth and amplitude of individual modes (including mixed modes) in several subgiant power spectra. We perform a forward modelling of a Kepler subgiant based on surface properties and observed frequencies. Non-adiabatic computations including a time- dependent treatment of convection give the lifetimes of radial and non-radial modes. Next, combining the lifetimes and inertias with a stochastic excitation model gives the amplitudes of the modes. We can now directly compare theoretical and observed linewidths and amplitudes of mixed-modes to obtain new constraints on our theoretical models.

Original languageEnglish (US)
Article number06028
JournalEPJ Web of Conferences
Volume101
DOIs
StatePublished - Sep 23 2015
EventCoRoT Symposium 3, Kepler KASC-7 Joint Meeting on Space Photometry Revolution - Toulouse, France
Duration: Jul 6 2014Jul 11 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Grosjean, M., Dupret, M. A., Belkacem, K., Benomar, O., Deheuvels, S., Samadi, R., & Grigahcene, A. (2015). Non-adiabatic study of the Kepler subgiant KIC 6442183. EPJ Web of Conferences, 101, [06028]. https://doi.org/10.1051/epjconf/201510106028