Введение
1 The Astrophysical Problems of Studying Binary Stars 15
1.1 Milestones in the history of binary stars 15
1.2 Classification of binary stars 17
1.3 Binary star formation mechanisms 18
1.4 Statistics of binary stars and their catalogues 21
1.5 Conclusion 25
2 Speckle Interferometry of Binary Stars 28
2.1 Introduction 28
2.2 Qualitative description 29
2.3 Theoretical description 30
2.4 Programme of the stars 34
2.5 Observations and data analysis 36
2.6 Results and discussion 38
2.6.1 HIP 689 38
2.6.2 HD 25811 (BAG 4) 41
2.6.3 COU 1289 44
2.6.4 COU 1291 47
2.6.5 41 Dra 50
2.7 Conclusions 54
3 Spectrophotometry of Binary Stars 55
3.1 Introduction 55
3.2 Programme of the stars 56
3.3 Observations and data analysis 56
3.4 Results and discussion 61
3.5 Conclusions 76
4 Physical Parameters of the Components of Binary Stars 77
4.1 Introduction 77
4.2 The quadruple system ADS 11061 80
4.2.1 Observational results 82
4.2.2 Atmospheric modeling and discussion 86
4.3 The two systems COU 1289 and COU 1291 95
4.3.1 Observational results 96
4.3.2 Atmospheric modeling and discussion 98
4.4 The system HD 25811 105
4.4.1 Observational results 105
4.4.2 Atmospheric modeling and discussion 108
4.5 The system HIP 689 113
4.5.1 Observational results 113
4.5.2 Atmospheric modeling and discussion 116
4.6 Conclusion 121
Conclusion 123
Bibliography 129
