Astronomy 323/423: The Local Universe
Admininistrative stuff: grading scheme, textbook and reference books
Problem set 1 (Galaxy classification) Due 5pm, Thurs Sept 11.
Problem set 2 (Galaxy colors and environment) Class presentations Thursday October 1, due in class Thursday October 8.
Problem set 3 (Stellar LF and star count modeling of the Galaxy) Class presentations Tuesday Nov 10, due in 5pm on Mon Nov 16.
Course Outline:
(1) Overview of galaxies and their
structure.
Aug 25: The Hubble sequence
and other non-morphological classification
schemes.
ESO page on
sky brightness
Aug 27: classifying galaxies
Aug 28 (class at 8:30am) Moving away from morphology
Sept 1: no class!
Sept 3: no class!
Sept 8: Measuring galaxy concentration, galaxy luminosity function
Sept 8: Slides on galaxy luminosity measurement, from Prof Andreas Berlind, Vanderbilt University
Sept 10: no class!
(2) Does environment matter?
Nature vs
nurture.
Galaxy luminosity
function.
Reading: text Ch 7, p278-297
Dynamics
of mergers(Mihos javalab)
Sept 17: Galaxy morphology and environment
Sept 18: (makeup class) Causes of galaxy trends with environment.
(3) A late-type spiral in a poor group -- the Milky Way
(a) Techniques of stellar populations:
Reading: text Ch 2.1, pp
58-66
Sept 22: Distance measurement:
Absolute and relative distance
indicators. Main sequence fitting.
Sept
24: Review
variable stars: Prof Mihos 222 notes
Cepheids and Baade-Wesselink method.
Recent work on Cepheids.
Reading: Binney and
Merrifield Section 7.2, 7.2.1
Sept 29: in-class test
Oct 1:
Stellar
luminosity function
Oct 5 and 8: Mass function and initial mass function
(b) Milky Way structure:
(i) disk populations: ISM, thin disk, thick disk, bar.
Mapping the Galaxy with star counts. Disk
kinematics. Rotation. Epicycles, disk heating, spiral
structure.
Multi-wavelength Milky Way
Oct 8: Stellar populations in
the Galaxy
The thin disk.
Oct 13: Thin disk's age, metallicity distribution, star count techniques.
Oct 15: midterm
Prof Mihos movie of disk going bar unstable
Tues Oct 27: Stellar
kinematics
Tues Oct 27: Orbits and Epicycles
Spiral structure and density waves
Oct 30: Formation of thick disk 1. (first
page blank by accident)
Oct 30: Formation of the thick
disk 2.
(ii) The stellar halo
Dynamical
friction (Mihos javalab)
Age measurement of globular clusters
(4) The Local Group.
Reading: text Ch 4, 4.1
(i) The three spirals: M31, Milky Way, M33. Reading: text Ch 4.2
(ii) Dwarf galaxies in the Local Group. Reading: text Ch 4.4
Reionization, formation, star formation history.
(5) Galaxy formation
Dark Matter. Galaxy formation theories.
Reading: Text section 4.3. Longair
Ch 11, Mihos 328 notes.
How galaxies get angular momentum
(6) Spiral Galaxies
Reading: text Ch 2.4, 5.2
LSB disk
galaxies. Types of galaxy bulges.
The galactic center and its black hole
(7) Elliptical galaxies
Properties and surface photometry.
Presentation on Elliptical galaxies and Sauron by Tim de Zeeuw
Structure of elliptical galaxies: boxy vs disky, fundamental plane.
What SAURON has taught us about bulges and ellipticals.
(8) AGN and their uses.
Active Galactic Nuclei. AGN density as f(redshift). AGN Feedback.
Black hole relations to galaxy properties; variations in fundamental
quantities with redshift)
(9) Galaxy formation revisited.
Lookback studies
of galaxies: Lyman break galaxies.
High redshift galaxies: Searches with deep near-IR imaging and sub-mm
Measuring galaxy mass at high redshift