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CU-Boulder ASTR 1120 - Syllabus

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ASTRONOMY 1120-001 General Astronomy: Stars and Galaxies T-Th 11:00-12:30; Room G1B20 Professor Glenn Office: Room F913, (303) 735-5904, [email protected] Office Hours: T, Th 1-2 PM & by appointment TA: Quyen Nguyen Hart, 492-6857, Office Hours M, W 10-12, Stadium 118 Why would you take ASTR 1120? To learn why stars shine, to learn why you wouldn’t want to live close to a black hole, to learn what galaxies are made of, and to learn why we think there was a Big Bang. Here are a couple of diagrams you will be able to explain by the end of the semester. An artists rendition showing our current The sky seen at microwave wavelengths understanding of the structure and contents with the Boomerang experiment. Mt. of the Milky Way (“Astronomy Today”, Erebus is in the background (courtesy the 3rd ed., by Chaisson & McMillan). Boomerang team, the NSF, and NASA). Course Prerequisite: None ASTR 1120 satisfies a natural science requirement for the Arts and Sciences core curriculum. Course Goals Astronomy: • To develop a basic understanding and appreciation of the physical universe. • To understand how astronomers learn about the Universe. • To demonstrate that our understanding of the Universe is constantly changing subject to new observations and interpretations—science is exciting! • To encourage you to follow current events in astronomy. General: Exercise critical thinking and quantitative reasoning skills (there will be math in this course). These skills are very useful outside of astronomy too.Course Content • Physical concepts: atoms, gravity, light, & telescopes • The Sun; star formation and evolution; star death • The Milky Way & other galaxies • Cosmology: the evolution of the Universe Class Format The class will consist of lectures, demonstrations, and presentations at the Fiske Planetarium. Text & Clickers “The Cosmic Perspective” by Bennett, Donahue, Schneider, & Voit, 3rd Ed. This text gives very good physical descriptions of processes in our Universe. We will use Clickers for quizzes and concepts questions. You must purchase a clicker at the bookstore. Register your clicker at http://capa.colorado.edu/cgi-bin/RegisterAFS. Coursework and Grading (yes, grades will be curved) 1. Three exams and the final (all multiple-choice), which is cumulative (15%, 15%, 15%, and 30%, respectively). 2. Daily quizzes with clickers (20%). Your three lowest scores (days) will be dropped. 3. One observation from one night at the SBO, (5%). WebCT Grades and course news will be posted at http://webct.colorado.edu. Log on with your Identikey username and password. Late Assignments & Makeup Exams Makeup exams will only be given with a doctor’s note or the equivalent. If you cannot make the prescheduled time for the final exam, make arrangements with me for an alternative time by the end of the sixth week of class (CU policy). Attendance & Additional Policies You are expected to attend lectures. The quiz and exam materials will be drawn from the lectures and the textbook. Copying and cheating will result in a minimum penalty of zero credit. Students with Disabilities If you have specific physical, psychiatric or learning disabilities and require accomodations, please let me know early in the semester so that your learning needs may be met. You will need to provide documentation of your disability to the Disability Services Department (303-492-8671) at the beginning of the semester.PRELIMINARY* SCHEDULE Section 1: Atoms, Gravity, & Light; Telescopes; the Sun Atoms (Ch. 4) 08/24 Gravity (Ch. 5) 08/26 Light (Ch. 6) 08/31 Constellations (Fiske Planetarium)/Telescopes (Ch. 7) 09/02 Constellations (Fiske Planetarium)/Telescopes (Ch. 7) 09/07 The Sun: A Nuclear Reactor (Ch. 15) 09/09,14 Exam 1: 09/16 Section 2: Stars, Star Formation & Evolution, & End States of Stars Stellar Classification, Binary Stars, & the H-R Diagram (Ch. 16) 09/21,23,28 Fall Break! 09/30 Stellar Evolution (Ch. 17) 10/05 Stellar Explosions, White Dwarfs, & Neutron Stars (Ch. 18) 10/07 Black Holes (S3, Ch. 18) 10/12 Exam 2: 10/14 Section 3: The Milky Way & Galaxies The Interstellar Medium & Star Formation (Ch. 17, 19) 10/19 The Milky Way’s Structure (Fiske) (Ch. 19)/Composition (Ch. 22) 10/21 The Milky Way’s Structure (Fiske) (Ch. 19)/Composition (Ch. 22) 10/26 The Milky Way’s Composition (Ch. 22) 10/28 Nearby Galaxies (Fiske Planetarium) (Ch. 20) 11/02 Nearby Galaxies (Fiske Planetarium) (Ch. 20) 11/04 Galaxy Evolution and Active Galactic Nuclei (Ch. 21, 22) 11/09 Exam 3: 11/11 Section 4: Cosmology: The Evolution of the Universe The Expansion of the Universe (Ch. 20) 11/16 The Cosmic Microwave Background (Ch. 23) 11/18 Inflation and the Early Universe (Ch. 23) 11/23 Thanksgiving 11/25 Life in the Universe (Ch. 24) 11/30 Observations due 11/30 Lecture Make-Up Day 12/02 Review 12/07,09 Final Exam (1:30-4:00 PM) 12/11 *The lecture schedule is subject to change but the exam dates will not change.Observations Observe any one celestial object from the Sommers-Bausch Observatory on campus (http://www.colorado.edu/sbo/). Use the appended sheet for recording and describing your observations. A signature from the telescope operator is required. The dates for observations will be given in class and on WebCT. Sign up for two sessions on the sign-up sheet in Stadium 118 to allow for bad weather. You don’t have to go to the second session if you get your observation done during the your first session.SBO Observations Your Name:_______________________________________ Date:______________ Signature of Telescope Operator:____________________________________________ Object Observed:_________________________________________________________ Rough Sketch of Object: In the space below, explain what you saw (you can use your textbook to help you by either looking up the specific object you observe or that type of object). Do this by trying to answer these questions. What is the object? Does the emission (light) you observe come from one source or many (e.g., a star, many stars, interstellar gas)? What is the source of energy for the emission you observe? If you can see any


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