
Description of Individual Course UnitsCourse Unit Code  Course Unit Title  Type of Course Unit  Year of Study  Semester  Number of ECTS Credits  9101015192004  Dynamics of Close Binary Stars  Elective  1  1  8 
 Level of Course Unit  Second Cycle  Objectives of the Course  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.  Name of Lecturer(s)  Prof.Dr.Ömer Lütfi Değirmenci  Learning Outcomes  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 examine the mathematical equations describing the dynamical tides in a comprehensive manner  4  Able to explicate the effects of dynamical processes exhibited by close binary systems to their evolution  5  Able to explicate the effects of dynamical properties of close binary systems to their geometry 
 Mode of Delivery  Face to Face  Prerequisites and corequisities  None  Recommended Optional Programme Components  None  Course Contents  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, Longrange 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  Weekly Detailed Course Contents  
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, Longrange 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   
 Recommended or Required Reading  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
 Planned Learning Activities and Teaching Methods   Assessment Methods and Criteria   Language of Instruction  Turkish  Work Placement(s)  None 
 Workload Calculation 

Midterm Examination  1  2  2  Final Examination  1  2  2  Seminar  2  20  40  Criticising Paper  8  15  120  Individual Study for Mid term Examination  1  25  25  Individual Study for Final Examination  1  40  40  
Contribution of Learning Outcomes to Programme Outcomes  LO1  4  5  4   4     3   3  LO2  4  5  3   3     3   3  LO3  5  5  3   4     3   3  LO4  4  5  4   3     3   3  LO5  5  5  3   4     3   3 
 * Contribution Level : 1 Very low 2 Low 3 Medium 4 High 5 Very High 



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