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| AST 352K · Stellar Astronomy |
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Caveat Emptor? I finish with two warnings, one applicable to all faculty members here and one specific to me. First, in
this department you deal with professional astronomers. The good part is that you get very close to current research, and that
can be very exciting. The bad part is that we tend to travel a lot (most obviously to observatories in remote and exotic locales),
and I will need to excuse myself from class a couple of times during the semester. However, all classes will meet, and if I must be
out of town I will have a substitute lecturer for class. At present I have a trip planned in mid October, for example. Second, I am currently
Letters Editor of The Astrophysical Journal. This means that inevitably I am pulled in many different teaching/service/research
directions simultaneously, and frankly I am very busy. However, this should not become your problem! I expect you to work in this
class, and you shuld expect no less of me. Do not feel the slightest hesitation in pushing me to make time for you outside of class;
politely in the beginning, but more firmly if I do not respond. Interaction on this course can only help.
Preliminary Course Outline (subject to revision)
- Introduction and Vital Observational Statistics of Stars: positions, distances, magnitudes, etc.
- The Basic Quantities of Radiation: intensity, flux, blackbodies
- Interpreting Stellar Magnitudes: luminosity, & effective temperature; stellar photometry & color indices; effects of the Earth's
atmosphere
- The heart of Observational Stellar Physics: spectroscopy, stellar spectral types; excitation & ionization equilibria; the
Hertzsprung-Russell diagram
- Further Extractions from Spectroscopy: radial velocity & proper motion; interstellar extinction; binary stars & the measurement of
stellar masses; the Mass-Luminosity relation
- Variable Stars: Cepheids, RR Lyraes, Long-Period Variables; white dwarf pulsators; close binary systems (mass-exchange &
contact binaries; cataclysmic variables; novae; etc.)
- Star Clusters: young clusters/pre-MS evolution; Main Sequence turnoffs & cluster ages; globular clusters; etc.
- Stellar Atmospheres: radiative transfer; basic principles of model atmospheres; spectral lines & abundance determinations;
stellar winds; stars of peculiar composition.
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