Interior Modelling of Massive Stars in Mul...

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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.

Über den Autor

Cole Johnston began his academic career at the Department of Astrophysics and Planetary Science at Villanova University, where he engaged in undergraduate research projects with Profs. Ed Guinan and Andrej Prsa. Before graduating, he traveled to the University of Central Lancashire to work with Prof. Don Kurtz for a summer and to KU Leuven to study under Prof. Conny Aerts. Upon graduating from Villanova, Cole returned to Belgium with the support of the Belgian American Educational Foundation to enroll in the Master of Astronomy and Astrophysics. Upon completion of his MSc, Cole began his PhD under the supervision of Prof. Conny Aerts and Drs. Steven Bloemen and Andrew Tkachenko.

Zusammenfassung

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

Inhaltsverzeichnis

Scientific Context.- Stellar Evolution Tracks, Isochrones, and Isochrone-clouds.- The O+B eclipsing binary HD 165246.- Estimating the Convective Core Mass for Stars in Eclipsing Binaries.- Binary Asteroseismology.

Details

Erscheinungsjahr:	2022
Fachbereich:	Astronomie
Genre:	Mathematik , Medizin , Naturwissenschaften , Physik , Technik
Rubrik:	Naturwissenschaften & Technik
Medium:	Taschenbuch
Reihe:	Springer Theses
Inhalt:	xviii 198 S. 49 s/w Illustr. 25 farbige Illustr. 198 p. 74 illus. 25 illus. in color.
ISBN-13:	9783030663124
ISBN-10:	3030663124
Sprache:	Englisch
Einband:	Kartoniert / Broschiert
Autor:	Johnston, Cole
Hersteller:	Springer Springer International Publishing AG Springer Theses
Verantwortliche Person für die EU:	Springer Verlag GmbH, Tiergartenstr. 17, D-69121 Heidelberg, juergen.hartmann@springer.com
Maße:	235 x 155 x 12 mm
Von/Mit:	Cole Johnston
Erscheinungsdatum:	23.05.2022
Gewicht:	0,335 kg