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Title, Abstract and Signature Page i
  
Acknowledgments viii
  
Chapter One: Introduction 1
I. Introduction. 1
II. What We Can Learn From Eclipsing Binary Stars. 2
III. Close and Interacting Binaries. 6
IV. Concluding Remarks. 16
 
Chapter Two: Object Selection 17
I. The Literature Search. 17
II. The Selection Criteria. 18
III. The Candidate Objects. 22
 

Chapter Three: Astronomical Photometry, Instrumentation and Observing Techniques

24
I. Introduction. 24
II. Basic Concepts. 25
III. The UBV System and Differential Photometry. 30
IV. The WSU-LAPO Photometry Instrumentation. 35
V. Observing Techniques and a Night at the Telescope. 42
 
Chapter Four: The Observations and Their Reduction 59
I. Introduction.  59
II. The Observations. 59
III. Dead Time Observations and Analysis. 72
IV. Reduction of Variable Star Observations. 74
V. The Light Curves. 77
 
Chapter Five: Analysis of the RZ Draconis Light Curve  86
I. Introduction. 86
II. The Wilson-Devinney Program for Light Curve Analysis. 86
III. Present Results 91
IV. Discussion 103
 
Chapter Six: Conclusion 108
 
Bibliography 112
 
Appendix A: Candidate Eclipsing Binary Star Systems 118
 
Appendix B: Computer Programs 123
Theorex 123
Helio 124
Phocoeff 128
Deadtime 132
Vareduce 133
Phase  136
Tranwd 139
Normal 140
 
Appendix C: Observations 142
RZ Draconis 142
GK Cephei 145
 

Appendix D: Summary of RZ Dra Light Curve Analysis with the WD Program

146

LIST OF FIGURES AND TABLES

Figures

Frontispiece: "Astronomer at Work" viii

Figure 1.1: Eclipsing binary light curve 3
Figure 1.2: Light curve of a close eclipsing binary 7

Figure 1.3: Equipotential surfaces and Lagrangian points in a close binary system

9
Figure 1.4: Classification of close binaries 12

Figure 1.5: Light curve of an Algol-type eclipsing binary

13
Figure 1.6: Mass transfer in a close binary 15
 
Figure 3.1: Theoretical extinction for RZ Draconis 28
Figure 3.2: Theoretical extinction for GK Cephei 29
Figure 3.3: The 40-cm reflector at LAPO 36
Figure 3.4: The Hopkins PEPH-101 photometer head 38

Figure 3.5: Schematic drawing of the WSU-LAPO 40-cm photometer

40
Figure 3.6: RZ Draconis finder chart 44
Figure 3.7: GK Cephei finder chart 45
 
Figure 4.1: Vignetting in the 40-cm photometer 61
Figure 4.2: Extinction in color v 63
Figure 4.3: Extinction in b-v 64
Figure 4.4: Extinction in u-b 65
Figure 4.5: Transformation coefficient in V 67
Figure 4.6: Transformation coefficient in B-V 68
Figure 4.7: Transformation coefficient in U-B 69

Figure 4.8: Dead time for the R1527 photomultiplier  tube

75
Figure 4.9: Comparison star raw v light curve 78
Figure 4.10: Comparison star raw b-v light curve 79
Figure 4.11: Comparison star raw u-b light curve 80
Figure 4.12: Raw light curve in v for RZ Draconis 81

Figure 4.13: Differential light curve in v for
RZ Draconis

82

Figure 4.14: Composite differential light curve in v
for RZ Dra

83

Figure 4.15: Composite differential light curve in v
for GK Cephei

x
 
Figure 5.1: Wilson-Devinney solution A for RZ Dra 98
Figure 5.2: Wilson-Devinney solution B for RZ Dra 99
Figure 5.3: Wilson-Devinney solution C for RZ Dra 100
Figure 5.4: Wilson-Devinney solution D for RZ Dra 101
Figure 5.5: Wilson-Devinney solution E for RZ Dra 102

Tables

Copyright 1991, 2003 Derek Wallentinsen.

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