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Measuring and Decoding Gravito-Inertial Modes in Intermediate- and High-Mass Stars

Published online by Cambridge University Press:  29 August 2019

C. Aerts ,
M. G. Pedersen  and
T. Van Reeth
C. Aerts
Affiliation:
Institute of Astronomy, KU, Leuven, Belgium email: [email protected] Department of Astrophysics, IMAPP, Radboud University Nijmegen, The Netherlands
M. G. Pedersen
Affiliation:
Institute of Astronomy, KU, Leuven, Belgium email: [email protected]
T. Van Reeth
Affiliation:
Institute of Astronomy, KU, Leuven, Belgium email: [email protected]
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Abstract

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This talk discussed the basics of gravito-inertial asteroseismology as recently developed for stars born with a convective core. Photometric space missions originally built for exoplanet hunting, notably Kepler, have opened up the low-frequency regime of stellar oscillations and revealed a larger diversity in variability than anticipated prior to the era of high-precision space photometry. The talk explained the basics of forward seismic modelling based on gravito-inertial modes, which probe the deep stellar interior. It described how a hierarchical fitting approach allows us to derive the near-core rotation period, the amount and shape of convective core overshooting, and the level of chemical mixing in the radiative envelope for stars born with a convective core and burning hydrogen in their core. A summary of the current status, covering the mass range 1.4 ≲ M ≲ 5 M⊙, is provided here through references to numerous recent papers.

Keywords

Stars: interiorsstars: evolutionstars: oscillations (including pulsations)stars: rotationmethods: statisticalmethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 98 - 103
Copyright
© International Astronomical Union 2019 

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