Interior Modelling of Massive Stars in Multiple Systems
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Beschreibung
This thesis by Cole Johnston brings novel insights into the inner workings of young massive stars. By bridging the observational fields of binary stars and asteroseismology this thesis uses state of the art statistical techniques to scrutinise theories of modern stellar astrophysics. Developing upon the commonly used isochrone fitting methodology, the author introduces the idea of isochrone cloud fitting in order to account for the full breadth of physics observed in stars. The author combines this methodology with gravity mode asteroseismic analysis to asses the level of chemical mixing deep within the stellar core in order to determine the star‘s age and core mass. Wrapped into a robust statistical framework to account for correlations, this methodology is employed to analyse individual stars, multiple systems, and clusters alike to demonstrate that chemical mixing has dramatic impact on stellar structure and evolution.
This thesis by Cole Johnston brings novel insights into the inner workings of young massive stars. By bridging the observational fields of binary stars and asteroseismology this thesis uses state of the art statistical techniques to scrutinise theories of modern stellar astrophysics. Developing upon the commonly used isochrone fitting methodology, the author introduces the idea of isochrone cloud fitting in order to account for the full breadth of physics observed in stars. The author combines this methodology with gravity mode asteroseismic analysis to asses the level of chemical mixing deep within the stellar core in order to determine the star‘s age and core mass. Wrapped into a robust statistical framework to account for correlations, this methodology is employed to analyse individual stars, multiple systems, and clusters alike to demonstrate that chemical mixing has dramatic impact on stellar structure and evolution.
Nominated as an outstanding Ph.D. thesis by the Institute of Astronomy, KU Leuven, Leuven, Belgium Offers novel insights into the inner workings of young massive stars Includes a self-contained description of statistical methodology With an appendix of G-mode asteroseismology ready MESA inlists Contains a list of ideal target systems
Autor*in
Cole Johnston
Themen in »Interior Modelling of Massive Stars in Multiple Systems«
Asteroseismology massive stars Stellar Evolution Stellar Interiors massive stars Binary Stars Convective stellar cores Stellar Clusters Isochrones in stars Stellar Models