Lecture Notes on 27 Jun 2019

Topics for Test 2 on Monday (1 Jul 2019)

* Test 2 is comprehensive. You need to study the topics for Test 1.
  Here are the new topics for Test 2.

* Appearance of Milky Way and what we can conclude from that.

* Shapley's work in determining the distance to the center of the
  Milky Way.

* Galaxy rotation - draw the rotation curve. Discuss evidence of
  dark matter.

* Difference between Population I and Population II objects.

* Galaxy catalogues - Messier and New General Catalogue (NGC).

* Hubble's classification of galaxies - draw the tuning fork diagram.

* Difference in properties between elliptical galaxies and spiral galaxies.

* Hubble's law and universal expansion of the universe.

* Derivation of the age of the universe from Hubble's Law.

* Cosmic background radiation.

* (Perfect) Cosmological Principle.

* Cosmological Models - open, closed, and flat universe.

* Active galaxies: radio galaxies, seyfert galaxies, and quasars.

* Establishing the distance scale.