Load:

1. komponenta
Lecture type  Total 
Lectures 
30 
Seminar 
15 
* Load is given in academic hour (1 academic hour = 45 minutes)

Description:

COURSE GOALS:
The principal aim of the course is to give students an introduction into the theory of stellar atmospheres, fundamental processes of radiative transfer in stellar atmospheres and the formation of continous and line spectra. Students would master basic tools for the analysis and diagnostics of stellar spectra as a key for understanding the physical processes in stellar in atmospheres and interiors of stars.
LEARNING OUTCOMES AT THE LEVEL OF THE PROGRAMME:
1.KNOWLEDGE AND UNDERSTANDING
1.1.demonstrate a thorough knowledge and understanding of the fundamental laws of classical
and modern physics;
1.2.demonstrate a thorough knowledge and understanding of the most important physics theories
(logical and mathematical structure, experimental support, described physical phenomena);
2.APPLYING KNOWLEDGE AND UNDERSTANDING
2.1.identify and describe important aspects of a particular physical phenomenon or problem;
2.2.recognize and follow the logic of arguments, evaluate the adequacy of arguments and
construct well supported arguments;
2.3.use mathematical methods to solve standard physics problems;
3.MAKING JUDGEMENTS
3.1.develop a critical scientific attitude towards research in general, and in particular by
learning to critically evaluate arguments, assumptions, abstract concepts and data;
4.COMMUNICATION SKILLS
4.2.present complex ideas clearly and concisely;
5.LEARNING SKILLS
5.2.search for and use professional literature as well as any other sources of relevant
information;
5.3.remain informed of new developments and methods in physics and education;
5.4.develop a personal sense of responsibility for their professional advancement and
development;
LEARNING OUTCOMES SPECIFIC FOR THE COURSE:
By the end of the course, the student should be able to:
1. Describe fundamental properties of stars
2. Understand a role of stellar mass and radius with a set of differential equations
of the stellar structure
3. Qualitatively and quantitatively describe radiative transfer in stellar atmospheres
4. Apply SchusterSchwarzschild and eddington approximations in the solution of
the radiative transfer equation in the stellar atmospheres
5. Apply Chandrashekhar exact method in solving the radiative transfer equation
6. Describe setup of stellar atmosphere models and apply them in the calculation
of the stellar spectra
7. Understand line absorption and line broadening mechanisms
8. Use computer software for the spectroscopic diagnostics of the stellar atmospheres
9. Understand differences of stellar chromospheres and coronae and describe their properties
10. Understand formation and properties of stellar winds and stellar oscillations
COURSE DESCRIPTION:
1. Fundamental stellar properties and data
2. Fundamental radiative quantities
3. The equation of the radiative transfer in stellar atmospheres
4. Source function
5. SchusterScwrazschild approximation
6. Eddington approximation
7. Chandrasekhar exact method
8. Opacity of stellar matter; Boltzman and Saha equations
9. Models of the stellar atmospheres
10. Line absorption
11. Line broadening mechanisms
12. Spectroscopic diagnostics of stellar atmospheres
13. Hydrogen lines
14. Stellar chromospheres and coronae; stellar winds
15. Stellar oscillations (asteroseismology)
REQUIREMENTS FOR STUDENTS:
Regular lecture attendance, active participation in tutorials. Oral presentation of seminar
and report including computer programing.
GRADING AND ASSESSING THE WORK OF STUDENTS:
Written exam 3 ECTS
Report and seminar 1 ECTS
Final exam is in written form. Final grade is a combination of grades obtained from
final exam (60%), seminar (20%) and computer program (20%)

Literature:

 E. BohmVitense, Introduction to Stellar Astrophysics, vol. 2, Cambridge University Press, Cambridge, 1989
 W. Novotny, Introduction to Stellar Atmospheres and Interiors, Oxford University Press, New York, 1973

Prerequisit for:

Enrollment
:
Attended
:
Introduction to Astrophysics
