The midterm exam will be based on any of the topics covered to date in class.
Below is a SUBSET of important topics to study. Note that the exam may also 
include topics not on this list.



- BACKGROUND PRE-REQUISITE READING
- Review quiz 1 and work through hwk 1 and 2

lec 2 
- Types of Galaxies : E, Sp, Dwarfs (dIrr, dSph, dE), cD
- Mag-surface brightness relation for Bulges+E vs Disks, Irr, Globular clusters
- de Vaucouleurs classification system for the Hubble Sequence

lec 3 
- Field vs Groups vs Clusters
- Local Group ; no of members, most massive members, etc 
- Difference between cluster vs field galaxies
- Morphology Density Relation. 

Lec 4 
- Galaxy Luminosity functions .
- Schechter LF  for field galaxies. Failures in clusters
- Malmquist bias in a magnitude limited survey

Lec 5-6   
-- Stellar popluation, color and spectra of galaxies
- Pre-req: Blackbody Radiation, Wien's Law, Stefan-Boltzmann Equation
  Evolution and Death of High and Low Mass Star
- At what wavelengths do different stars emit most of their light
- Which stellar populations are well traced by UV, optical, NIR, mid-IR images?
- Spectral synthesis : Evolutionary Track, IMF, Isochrones, SFR
- Spectra of typical galaxies E vs Sp vs Irr


Lec 7-8-9
- Dark matter 
- Circular speed and escape speed for spherical potential 
- The Virial Theorem		
- Evidence for dark matter in spirals, Es
- Evidence for dark matter in groups
- Candidates for Dark Matter 
- Evidence in favor of CDM vs HDM 
- Dark Matter vs Dark Energy


Lec 10  
- SB profiles of E and Spiral galaxies 
- Mag-surface brightness relation for Bulges+E vs Disks, Irr, Globular clusters


Lec 11-12 
--- Galaxy mergers/interactions  
- Impact of galaxy mergers/interactions on SF 
- Impact of galaxy mergers/interactions on AGN activity 
- Impact of galaxy mergers/interactions on stucture of galaxies
- Major vs Minor mergers
- Dynamical friction timescale