Reference : Asteroseismic inversions in the context of Plato
Scientific congresses and symposiums : Unpublished conference/Abstract
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/185001
Asteroseismic inversions in the context of Plato
English
Buldgen, Gaël mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Dupret, Marc-Antoine mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie >]
Reese, Daniel Roy [University of Birmingham > School of Physics and Astronomy > > >]
2014
Yes
No
International
PLATO 2.0 Science Conference
du . décembre 2014 au 5 décembre 2014
[en] Asteroseismology ; Inversion techniques ; Stars: fundamental parameters
[en] The determination of stellar characteristics such as the mass, the age or the radius, is crucial when
studying both stellar evolution and exoplanetary systems. In the context of the Plato mission, the
high quality data allows us to reach a new level of accuracy and model-independence for stellar
characterization by using inversion techniques. In this study, we will use the SOLA method (F.
Pijpers and M. J. Thompson 1994), known for its successes in helioseismology, and show how it
can offer us new insights into the structure of observed stars. We will present results for the mean
density, building on the approach of Reese et al. 2012, and other custom-made structural
characteristics constraining the outer layers of stars and the chemical content of their cores. We will
show that inversions can determine these characteristics within 0.5%, a significant improvement
over the capabilities of the classical forward modelling process. Consequently, such inversions lead
to better stellar models and help us obtain more accurate estimates of fundamental parameters such
as the age, mass or radius.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
http://hdl.handle.net/2268/185001

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