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Galactic and Extragalactic Astronomy II - NAST004

Title:	Galaktická a extragalaktická astronomie II
Guaranteed by:	Astronomical Institute of Charles University (32-AUUK)
Faculty:	Faculty of Mathematics and Physics
Actual:	from 2015 to 2019
Semester:	winter
E-Credits:	3
Hours per week, examination:	winter s.:2/0, Ex [HT]
Capacity:	unlimited
Min. number of students:	unlimited
4EU+:	no
Virtual mobility / capacity:	no
State of the course:	taught
Language:	Czech
Teaching methods:	full-time
Teaching methods:	full-time

Guarantor:	doc. RNDr. Ladislav Šubr, Ph.D. RNDr. Bruno Jungwiert, Ph.D.
Classification:	Physics > Astronomy and Astrophysics
Comes under:	Doporučené přednášky 1/2

Opinion survey results Examination dates Schedule Noticeboard

Annotation -

Last update: T_AUUK (30.03.2015)

Lecture is dedicated to basic theories of dynamics of stellar systems on the scales of galaxies and star clusters.

Literature -

Last update: T_AUUK (17.05.2012)

J. Binney, and S. Tremaine, Galactic Dynamics, Princeton Series in Astrophysics, Princeton Univ Press, New Jersey, 1987

G. Gilmore, I.R. King, and P.C. van der Kruit, The Milky Way of our Galaxy, University Science Books, Mill Valley, California, 1989eorém o homeoidu, třetí Newtonúv teorém.

J. Binney, and S. Tremaine, Galactic Dynamics, Princeton Series in Astrophysics, Princeton Univ Press, New Jersey, 1987

G. Gilmore, I.R. King, and P.C. van der Kruit, The Milky Way of our Galaxy, University Science Books, Mill Valley, California, 1989

Teaching methods - Czech

Last update: T_AUUK (31.03.2008)

Přednáška.

Syllabus -

Last update: prof. RNDr. David Vokrouhlický, DrSc. (14.01.2019)

Overview of galaxies

morphology, bars and rings; Hubble and de Vaucouleurs classification

Dynamics of galaxies

epicyclic approximation; dynamics if the field of a bar; Lindblad resonances;

angular momentum transfer accross the Lindblad resonances and corrotation

radius

Theory of spiral waves

Jeans' instability; instabilities in rotating systems; instability in two-

dimensional systems - Toomre's criterion; theory of Lin & Shu

Star cluster dynamics

relaxation time; dynamical friction; virial theorem; gravothermal catasthrope;

Jeans' theorem; polytropic models of star clusters (Plummer sphere, isothermal

sphere); Fokker-Planck approximation; Rosenbluth potentials; two-body

relaxation in systems with dominant black hole - Bahcall & Wolf distribution;

resonant relaxation