Asteroseismic inversions in the Kepler era: application to the Kepler Legacy sample

Abstract

In the past few years, the CoRoT and Kepler missions have carried out what is now called the space photometry revolution. This revolution is still ongoing thanks to K2 and will be continued by the Tess and Plato2.0 missions. However, the photometry revolution must also be followed by progress in stellar modelling, in order to lead to more precise and accurate determinations of fundamental stellar parameters such as masses, radii and ages. In this context, the long-lasting problems related to mixing processes in stellar interior is the main obstacle to further improvements of stellar modelling. In this contribution, we will apply structural asteroseismic inversion techniques to targets from the Kepler Legacy sample and analyse how these can help us constrain the fundamental parameters and mixing processes in these stars. Our approach is based on previous studies using the SOLA inversion technique to determine integrated quantities such as the mean density, the acoustic radius, and core conditions indicators, and has already been successfully applied to the 16Cyg binary system. We will show how this technique can be applied to the Kepler Legacy sample and how new indicators can help us to further constrain the chemical composition profiles of stars as well as provide stringent constraints on stellar ages.

To appear in the proceedings of the Kasc 9 Tasc 2 workshop

References in corpus (5)

• Standing on the shoulders of Dwarfs: the Kepler asteroseismic LEGACY sample II - radii, masses, and ages
• Standing on the shoulders of Dwarfs: the $Kepler$ asteroseismic LEGACY sample I - oscillation mode parameters
• CLES, Code Liegeois d'Evolution Stellaire
• Fresh insights on the structure of the solar core
• The Liege Oscillation Code

Cited by in corpus (10)

• Constraining convective regions with asteroseismic linear structural inversions
• Thorough characterisation of the 16 Cygni system. Part II. Seismic inversions of the internal structure
• Asteroseismic modelling strategies in the PLATO era I. Mean density inversions and direct treatment of the seismic information
• Resolving Power of Asteroseismic Inversion of the Kepler Legacy Sample
• Influence of the magnetic activity cycle on mean density and acoustic radius inversions
• The stellar activity-rotation-age relationship under the lens of asteroseismology
• Revisiting Kepler-444 Part I. Seismic modelling and inversions of stellar structure
• Asteroseismic modelling of main-sequence solar-like stars and Kepler exoplanet host stars with the FICO procedure I. Catalogue of fundamental stellar properties
• Progress in global helioseismology: a new light on the solar modelling problem and its implications for solar-like stars
• Probing stellar cores from inversions of frequency separation ratios