https://doi.org/10.1051/epjconf/201510106028
Non-adiabatic study of the Kepler subgiant KIC 6442183
1 Institut d’astrophysique et de géophysique, Université de Liège, BELGIUM
2 LESIA, observatoire de Paris-Meudon, FRANCE
3 Departement of Astronomy, Univsersity of Tokyo, JAPAN
4 UPS-OMP, IRAP, Universitè de Toulouse, FRANCE
5 Instituto de Astrofisica de Andalucia, Camino Bajo de Huetor 50, Granada E-18008, SPAIN
Published online: 23 September 2015
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.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
