Non-adiabatic study of the Kepler subgiant KIC 6442183

M. Grosjean, M. A. Dupret, K. Belkacem, Othman 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

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life (durability)
inertia
surface properties
power spectra
convection
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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

Non-adiabatic study of the Kepler subgiant KIC 6442183. / Grosjean, M.; Dupret, M. A.; Belkacem, K.; Benomar, Othman; Deheuvels, S.; Samadi, R.; Grigahcene, A.

In: EPJ Web of Conferences, Vol. 101, 06028, 23.09.2015.

Research output: Contribution to journalConference article

Grosjean, M, Dupret, MA, Belkacem, K, Benomar, O, Deheuvels, S, Samadi, R & Grigahcene, A 2015, 'Non-adiabatic study of the Kepler subgiant KIC 6442183', EPJ Web of Conferences, vol. 101, 06028. https://doi.org/10.1051/epjconf/201510106028
Grosjean M, Dupret MA, Belkacem K, Benomar O, Deheuvels S, Samadi R et al. Non-adiabatic study of the Kepler subgiant KIC 6442183. EPJ Web of Conferences. 2015 Sep 23;101. 06028. https://doi.org/10.1051/epjconf/201510106028
Grosjean, M. ; Dupret, M. A. ; Belkacem, K. ; Benomar, Othman ; Deheuvels, S. ; Samadi, R. ; Grigahcene, A. / Non-adiabatic study of the Kepler subgiant KIC 6442183. In: EPJ Web of Conferences. 2015 ; Vol. 101.
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