Stellar acoustic radii and ages from seismic inversion techniques
1 Institut d’Astrophysique et Géophysique, University of Liège, Liège, Belgium
2 School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
3 LESIA, Observatoire de Paris, Université Denis Diderot, Meudon, France
Published online: 23 September 2015
Determining stellar characteristics such as the radius, mass or age is crucial and asteroseismology is currently the most promising tool to provide these results accurately. We extend the SOLA inversion technique to new global characteristics in addition to the mean density  and apply our methodology to the acoustic radius and an age indicator based on the sound speed derivative. The results from SOLA inversions are compared with estimates based on the small and large frequency separations for several test cases. We show that SOLA inversions yield more accurate results than other techniques which are more sensitive to surface effects.
© 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.