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Description of Individual Course Units


Course Unit Code Course Unit Title Type of Course Unit Year of Study Semester Number of ECTS Credits
9101015192004 Dynamics of Close Binary Stars 1 1 8,00

Yüksek Lisans


Turkish


The aim of the course is to make students to be able to explicate the existing knowledge of the theory of dynamical phenomena exhibited by close binary systems, comprehensively; able to comprehend the role of these dynamical phenomena in the evolution of binary stars; able to determine the observational implications of them; able to interrogate compatibility of existing observations with the evolution track of such systems.



1 Able to investigate the close binary systems dynamically in a comprehensive manner
2 Able to comprehend the processes that satisfy the equilibrium in close binary stars in detail
3 Able to explicate the effects of dynamical processes exhibited by close binary systems to their evolution
4 Able to examine the mathematical equations describing the dynamical tides in a comprehensive manner
5 Able to explicate the effects of dynamical properties of close binary systems to their geometry


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Binary stars in the sky, Figures of Equilibrium: Equipotential surfaces, Rotational distortion, Tidal distortion, Interaction between rotation and tides, Effects of internal structure, Gravity, Density distribution and moments of inertia, Dynamical tides: Equations of the problem, Linearized equations, Forced Oscillations: Dynamical tides, Dissipation of energy by dynamical tides, Generalized rotation: Equations of motion for deformable bodies, Rotation of deformable bodies, Effects of viscosity, Nonuniform rotation, Dynamics of close binary systems: Equations of the problem, Perturbations of the orbital planes, Perturbations in the ortbital planes, Period changes in eclipsing binary systems, Effects of variable mass, Perturbations by e third body, Long-range perturbations, The Roche model: Roche equipotentials, Geometry of Roche surfaces, The Roche coordinates, Stability of the components of close binary systems: Criteria of stability, Secular stability, Dynamical stability, Origin and evolution of binary stars, Evolution of stars, Classification of close binary systems, Nuclear evolution of close binary systems, Tidal evolution of close binary systems, Beginnings and Ends


Week Subjects (Theoretical) Teaching Methods Preparatory
1 Binary stars in the sky, Figures of Equilibrium: Equipotential surfaces
2 Rotational distortion, Tidal distortion, Interaction between rotation and tides
3 Effects of internal structure, Gravity, Density distribution and moments of inertia
4 Dynamical tides: Equations of the problem, Linearized equations
5 Forced Oscillations: Dynamical tides, Dissipation of energy by dynamical tides
6 Generalized rotation: Equations of motion for deformable bodies, Rotation of deformable bodies
7 Effects of viscosity, Nonuniform rotation
8 Midterm examination
9 Dynamics of close binary systems: Equations of the problem, Perturbations of the orbital planes, Perturbations in the ortbital planes
10 Period changes in eclipsing binary systems, Effects of variable mass
11 Perturbations by e third body, Long-range perturbations
12 The Roche model: Roche equipotentials, Geometry of Roche surfaces, The Roche coordinates
13 Stability of the components of close binary systems: Criteria of stability, Secular stability, Dynamical stability
14 Origin and evolution of binary stars, Evolution of stars, Classification of close binary systems
15 Nuclear evolution of close binary systems, Tidal evolution of close binary systems, Beginnings and Ends
16 Final examination

COURSE BOOK(S): Kopal, Z., Dynamics of Close Binary Systems, Edited by J.E. Blamont, Kluwer Language of Science, Published by D.Reidel Publishing Company, P.O.Box 17, Dordrecht, Holland


Activities are given in detail in the sections of "Assessment Methods and Criteria" and "Workload Calculation".


Term (or Year) Learning Activities Quantity Weight
Midterm Examination 1 50
Homework 1 50
Total 100
End Of Term (or Year) Learning Activities Quantity Weight
Final Examination 1 100
Total 100
Term (or Year) Learning Activities 40
End Of Term (or Year) Learning Activities 60

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Activities Number Time (hours) Total Work Load (hours)
Midterm Examination 1 2 2
Final Examination 1 2 2
Attending Lectures 14 3 42
Report Preparation 5 20 100
Report Presentation 1 10 10
Seminar 1 30 30
Criticising Paper 1 4 4
Individual Study for Mid term Examination 1 15 15
Individual Study for Final Examination 1 20 20
Total Work Load (hours) 225

PO 1 PO 2 PO 3 PO 4 PO 5 PO 6 PO 7
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LO 2
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* Contribution Level: 1 Very low 2 Low 3 Medium 4 High 5 Very High