Observations and Models of Eclipsing Binary Systems: RT And, TU Boo, KV Gem, UU Lyn, MY Cyg, KR Per, RU Eri, and YY Cet

TL;DR

This paper provides detailed observations and models of eight eclipsing binary systems, highlighting their importance in understanding stellar properties, evolution, and testing fundamental physics.

Contribution

It offers comprehensive analysis of eight specific eclipsing binaries and proposes an evolutionary scenario for W UMa systems based on collected data and modeling.

Findings

Analysis of eight eclipsing binary systems.

Proposal of an evolutionary scenario for W UMa stars.

Comparison of models with previous findings.

Abstract

Eclipsing binary systems form the fundamental basis of Astronomy in the sense that they are the primary means to determine fundamental stellar astrophysical quantities such as mass, radius, and temperature. Furthermore, they allow us to study the internal dynamos and resulting magnetic cycles of stars that we would normally only be able to study for one star, our Sun. The systems themselves are extremely interesting objects, consisting of a multitude of configurations that are tied together by a complex evolutionary history. Finally, they allow us to test theories of stellar structure and even General Relativity. Thus the accurate observation and modeling of these systems is of great importance to the field. The first three chapters of this thesis are devoted to acquainting a reader with a general science background, but no knowledge of Astronomy, to eclipsing binaries and the field in general, and should provide the reader with an adequate background to understand the rest of the thesis. The subsequent eight chapters are each devoted to the analysis of eight separate systems, (RT And, TU Boo, KV Gem, UU Lyn, MY Cyg, KR Per, RU Eri, and YY Cet), with each chapter arranged as would be generally found in a journal article. The collected data, models, and derived parameters for each system are analyzed in context to previous findings and general trends seen throughout the thesis. An evolutionary scenario for the formation of A and W type W Uma systems, with two types of near-contact systems as precursors and intermediates, is proposed.