SubjectsSubjects(version: 845)
Course, academic year 2018/2019
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Binary stars - NAST019
Title in English: Dvojhvězdy
Guaranteed by: Astronomical Institute of Charles University (32-AUUK)
Faculty: Faculty of Mathematics and Physics
Actual: from 2015 to 2019
Semester: summer
E-Credits: 3
Hours per week, examination: summer s.:2/0 Ex [hours/week]
Capacity: unlimited
Min. number of students: unlimited
State of the course: taught
Language: Czech
Teaching methods: full-time
Guarantor: prof. RNDr. Petr Harmanec, DrSc.
RNDr. Pavel Mayer, DrSc.
Classification: Physics > Astronomy and Astrophysics
Annotation -
Last update: T_AUUK (30.03.2015)
Definion of a binary, various classifications of binaries. Determination of the basic physical properties of spectroscopic, eclipsing and visual binaries. The role of the Roche model. Apsidal motion. Complications caused by the presence of circumstellar matter in the system. Various phenomenological types of binaries. Final evolutionary stages. Theories of the origin of binaries. Optional lecture for students from the 3rd to 5th year of study and other interested parties. Opens usually once per two years.
Literature - Czech
Last update: T_AUUK (30.03.2015)

Aitken R.G. 1935 The binary stars, McGraw-Hill, New York

Andersen J. 1991 Astron. Astrophys. Rev. 3, 91

Batten A.H. 1973 Binary and multiple systems of stars, Pergamon Press

Harmanec a Brož 2011 Stavba a vývoj hvezd, Matfyzpress, Praha

Hilditch 1999 Binary stars, Cambridge Univ. Press

Shore S.N. 2003 The Tapestry of Modern Astrophysics, John Wiley and Sons, Hoboken, New Jersey, USA

Warner B. 1995 Cataclysmic variable stars, Cambridge Univ. Press

Teaching methods - Czech
Last update: T_AUUK (31.03.2008)


Syllabus -
Last update: doc. RNDr. Petr Zasche, Ph.D. (08.01.2019)

The role of binaries for astrophysics.

The range of observed physical properties and various types of classification of binaries.

Basic elements describing the binary orbit.

Roche model.

Determination of times of minima or maxima, the O-C diagrams, changes of the orbital period.

Analysis of radial-velocity curves for double-line and single-line binaries.

Types of light curves and basic principles of the light-curve solutions.

Visual binaries and triple systems.

The Light-time effect, dynamical effects.

Manifestations of the apsidal motion, sideric, anomalistic and apsidal periods.

Deformations of the radial-velocity and light curves due to the presence of circumstellar matter in the system.

Observed phenomenological types of binaries.

Early and late evolutionary stages.

Contemporary theories of the origin of binaries and multiples, statistics of binaries in stellar population.

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