INTRODUCTORY COURSES AND COURSES FOR NON-CONCENTRATORS. Astronomy 101/111 discusses our explorations of the solar system. Astronomy 102/112 deals with stars and the rest of the Universe beyond the solar system. Students in Astronomy 101 and 102 attend a weekly discussion section. Students in Astronomy 111 and 112 actively participate in a laboratory which meets in the evening each week. None of these courses is a prerequisite for any of the others. High school mathematics through plane geometry is useful. All students in each course will have opportunities for a planetarium visit and for evening observations with the telescopes mounted on Angell Hall.

101. Introductory Astronomy: The Solar System. No credit granted to those who have completed or are enrolled in 111, 130, 160, or 221. (4). (NS).

Astronomy 101 students attend the same lectures as Astronomy 111 students (see course description below). (Section 001:Sears; Section 006:Worthey)

102. Introductory Astronomy: Stars, Galaxies, and the Universe. No credit granted to those who have completed or are enrolled in 112, 130, 160, or 222. (4). (NS).

Astronomy 102 students attend the same lectures as Astronomy 112 students (see course description below). Instead of laboratory sections, Astronomy 102 incorporates weekly one-hour discussions and associated homework, which is considered along with examinations and quizzes for course grades. Cost:2 WL:4 (Section 001:Mateo; Section 006:Seitzer)

111. Introductory Astronomy: The Solar System. No credit granted to those who have completed or are enrolled in 101, 130, 160, or 221. (4). (NS).

This course presents an introduction to the field of astronomy and astrophysics with an emphasis on the discoveries from space exploration. The first third of the course deals with understanding the history of astronomy, orbits, gravitation, optics and the properties of light and matter. The rest of the course explores the properties, origin and evolution of the major planets, asteroids, comets, the Sun and other components of the Solar System with particular emphasis on comparative aspects with respect to the Earth. The origin and formation of the Solar System and the origin of life will also be discussed. This course is intended for non-science concentrators with a basic high school math and science background. Astronomy 111 has a two-hour laboratory section every week. Astronomy 101 has a one-hour discussion section. Course requirements include assigned reading, section meetings, homework, observations and examinations. Laboratory sections include observations with telescopes. Cost:2 WL:4 (Section 001: Sears; Section 005: Worthey)

112. Introductory Astronomy: Stars, Galaxies, and the Universe. No credit granted to those who have completed or are enrolled in 102, 130, 160, or 222. (4). (NS).

This course is intended primarily for non-science concentrators, who wish to understand the phenomena and properties of the universe beyond our solar system. There are no astronomy prerequisites, and a basic high school math background (e.g., not calculus) will suffice. Students examine the widest possible range of interrelated natural phenomena, from sub-atomic particles to the Universe as a whole. Lectures inventory the different types of stars and examine how red giants, white dwarfs, black holes, supernovae, and people all fit together in one grand, remarkable scheme. The larger picture includes our Milky Way galaxy, less hospitable exploding galaxies, and enigmatic quasars. The present state of knowledge or speculation regarding the origin and ultimate fate of our universe will also receive special attention. It all came from somewhere, but where...and why? Course grades will be derived from scheduled quizzes, a midterm and a final exam, and laboratory exercises. Laboratory sections, which meet for two evening hours each week, will include planetarium demonstrations and observations with telescopes (weather permitting) mounted on Angell Hall. Cost:3 WL:4 (Section 001: Mateo; Section 006: Seitzer)

160. Introduction to Astrophysics. Math. 115, and prior or concurrent enrollment in Phys. 140; or permission of instructor. No credit granted to those who have completed or are enrolled in 102, 112, 130, 221, or 222. (4). (NS).

This course introduces students with some science and math background to methods and concepts of modern astrophysics. Topics: astrophysical processes; modern telescopes and instrumentation; stellar spectra, motions, and atmospheres; stellar interiors and nuclear energy generation; evolution of stars and their planetary systems from birth in giant molecular clouds to deaths as white dwarfs, neutron stars, or black holes; stellar systems, our Milky Way galaxy; dark matter and interactions in galaxies; the distribution of galaxies and quasars in the Universe; cosmic background radiation and the Big Bang. Problem sets and a weekly two-hour laboratory using telescopes on Angell Hall. Cost:2 WL:3 (Aller)

204/AOSS 204/Geology 204. The Planets: Their Geology and Climates. High school mathematics through plane geometry and trigonometry. Those with credit for GS 113 may only elect Astro. 204 for 2 credits. (3). (NS).

See Geology 204. (Atreya and Pollack)

261/NOEP 301. Navigation. (2). (Excl).

See Navy OEP 301.

402. Stellar Astrophysics. Math. 216, and prior or concurrent enrollment in Phys. 242; or permission of instructor. No credit granted to those who have completed Astro. 422. (3). (Excl).

The lectures begin with a survey of the observational data of stellar astronomy: distances, masses, colors, spectra, binary stars, open and globular clusters, and the HR Diagram. The following topics will then be highlighted: Atomic and Molecular Structure, Radiative and Convective Energy Transfer, The Structure and Composition of Stellar Atmospheres, The Equations of Stellar Structure, Stellar Models, Stellar Evolution, and Nucleosynthesis. The lectures will not follow the text, which will be used to fill in areas not specifically covered in class. Planned text: Fundamental Astronomy (Karttunen et al.). Cost:2 WL:3 (Cowley)

403. Astrophysics of the Interstellar Medium. Math. 216, and prior or concurrent enrollment in Phys. 240; or permission of instructor. (3). (Excl).

This course is intended for students with backgrounds in any field of science who wish to learn about the matter that pervades space. The interstellar gas and dust contain debris from old stars, provide environments for the formation of new stars, and yield important information about physical and chemical properties in everything from nearby nebulae to distant quasars. Topics to be explored on macroscopic scales include HII regions, planetary nebulae, supernova remnants, galactic fountains, cold molecular clouds, active galactic nuclei, and quasars. At the microscopic level, atomic and radiative processes involving ionization, excitation, recombination, heating, and cooling will be examined in detail. Classes will have a lecture format with ample opportunities for discussion. Grades will be derived primarily from performance on homework problems and examinations. (Macalpine)

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