## ASTRONOMY (AY)

Professor Stanley T. Jones, Chairperson

Office: 206 Gallalee Hall

*A student must take *both* AY 101 and AY 102 in order to use either of these courses to satisfy part of the **N **requirement of the University Core Curriculum. The sequence of courses AY 101:102 and AY 203:204 (or AY 203:206) may be used to satisfy all 8 hours of the **N** requirement.*

**AY 101 Introduction to Astronomy.** Three hours.

History of astronomy, the solar system, stars, galaxies, and the universe; recent discoveries about pulsars, black holes, and quasars will be discussed. Three lectures. NOTE: If the student plans to apply AY 101 toward satisfaction of the **N** requirement of the University Core Curriculum, AY 102 must also be taken.__
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**AY 102 Introduction to Astronomy Laboratory.** One hour.

Prerequisite or corequisite: AY 101.

Observation of the sun, moon, and daytime astronomical activity. Indoor exercises include stellar spectra, H-R diagram, celestial sphere, and astronomical photographic analysis. NOTE: If the student plans to apply AY 102 toward satisfaction of the **N** requirement of the University Core Curriculum, AY 101 must also be taken.

**AY 203 Observational Astronomy.** Two hours.

Prerequisite: MATH 113 or MATH 115 (or equivalent); concurrent enrollment in AY 204 or AY 206; or permission of the instructor.

Students learn to observe and photograph planets, stars, and galaxies using several kinds of telescopes. On cloudy nights, astronomical photographs and material obtained at other observatories are studied. One lecture and one laboratory. Offered fall semester. NOTE: AY 203 may not be applied with AY 101 to satisfy part of the **N** requirement of the University Core Curriculum (see AY 101 and AY 102 above).

**AY 204 Solar System Astronomy.** Three hours.

Prerequisite: MATH 113 or MATH 115 or equivalent.

Discussion of orbital mechanics and of the interior structure, surface features, atmosphere, and origin of the sun, planets, and solar system.

**AY 206 Astronomy beyond the Solar System.** Three hours.

Prerequisite: MATH 113 or MATH 115 or equivalent.

Study of the evolution of stars, relativity and black holes, the structure of galaxies, and the formation and evolution of the universe.

**AY 401 Celestial Mechanics.** Three hours.

Prerequisite: PH 301.

Review of the two-body problem, Kepler's equation, planetary orbits, gravitational potential, perturbations, and motions of rockets; discussion of the three-body and n-body problems. Star cluster and galaxy dynamics. Offered according to demand.

**AY 421 Theoretical Astrophysics.** Three hours.

Prerequisite: PH 253.

Prerequisite or corequisite: PH 332.

Three lectures. Introduction to astrophysical processes in stellar atmospheres, stellar structure, stellar evolution, galactic structure, the interstellar medium, active galaxies, and quasars. Offered according to demand.

**AY 433 Astronomical Techniques.** Three hours.

Survey of current experimental problems in astronomy and the methods used in solving them. Techniques discussed include photography, photometry, and spectroscopy. Offered according to demand.

**AY 491 Independent Study I.** One to three hours.

**AY 492 Independent Study II.** One to three hours.

*Students minoring in astronomy who are not physics majors may earn credit toward the minor for the following physics (PH) courses.*

**PH 253 Introduction to Modern Physics.** Three hours.

**PH 255 Modern Physics Laboratory.** One hour.

**PH 301 Mechanics.** Three hours.

**PH 333 Intermediate Optics.** Four hours.