Babes-Bolyai University of Cluj-Napoca
Faculty of Mathematics and Computer Science
Study Cycle: Master
SUBJECT

Code	Subject	
MM268	Stellar Structure and Evolution	

Section	Semester	Hours: C+S+L	Category	Type	
Applied Mathematics	2	2+1+1		optional	
Mathematical Models in Mechanics and Astronomy - in English	2	2+2+0		compulsory	

Teaching Staff in Charge	Lect. GROSAN Teodor, Ph.D., tgrosan@math.ubbcluj.ro	
Aims	The study of methods for modelling stellar structure and stellar evolution and comparision of theorethical data with observational evidence: the equation of stellar interior, evoltionary traks, the equation of relativistic stellar equilibrium, simple stellar models, observational properties of stars. The introduction of the fundamental problems of stellar atmosphere modelling and stellar stability computation.
	
Content	1. Observational properties of stars:: mass, radii, temperatures, luminosity,  state relations.
2. Stellar atmospheres: general structure, energy transfer. Monochromatic and integral radiation heat transfer equation. Eddington approximation. Chandrasekhar method, exact solutions. Limb darkening. Models of stellar atmosphere.
3. Stellar equilibrium equations for spherical symmetric stars. Virial theorem. Heat transfer through radiation, conduction and convection. Physical conditions in the stars.
4. Properties of the stellar matter: radiating ideal gas, state equations. Stellar mattter opacity Thermonuclear reactions and generation energy function.
5. Stellar models: polytrophic stars, isothermal stars, standard model, super massive stars, numerical models. 
6. Stellar stability: characteristic time.
	
Bibliography	1. CHANDRASEKHAR, S., Intrduction to the theory of stellar structure, Boston, 1939, 1950.
2. UNSOLD, A., BASCHEK, B - Der neue Kosmos, Springer, 2002.
3. SMITH E.P., JACOBS K.C., Introductory Astronomy and Astrophysics, W.B. Saunders Company, Philadelphia, London, Toronto, 1973.
4. ZELDOVICI, Ya.B., NOVIKOV, I.D., Stars and relativity, University of Chicago Press, Chicago, 1971.
5. KIPPENHAHN, R., WEIGERT, A., Stellar Structure and Evolution, Springer - Verlag, 1990.
6.TAYLER, R.J., The Stars: their structure and evolution, Springer - Verlag, New York, 1970.
7.WEINBERG, S., Gravitation and cosmolgy, 1974.
8.MISNEV, C.W., THORNE, K.S., WHEELER, J.A., Gravitation, San Francisco, 1973.
9.URECHE, V., Universul, Vol. II, Astrofizica, Cluj-Napoca, 1987.
	
Assessment	Written exam:  50%
Seminar activity: 25% 
Research project:  25%