lecture_tan28 - 1. 2. 3. 4. 5. 6. 7. 8. Admin. 3/29/11...

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Admin. 3/29/11 1. Class website http://www.astro.ufl.edu/~jt/teaching/ast1002/index.html 2. Discussion sections: Tuesday 1.55pm (period 7), Bryant 3 Wednesday 10.40am (period 4), Bryant 3 Thursday 3.00pm (period 8), Bryant 3 Office hr: Thursday (5pm), Bryant 302 3. Homework 8 due Sun. Apr. 3 by 11pm (keep a record of your answers) 4. Reading: Chapters 0-13, now Chapters 14, 15 5. Email me Astro - news, jokes, tunes, images: ast1002_tan@astro. ufl . edu 6. Print out notes and bring them to class - use these as a base outline to take extra notes in class. 7. Midterm 2:results are online via Sakai 8. Observing Project due April 5 - complete at campus observatory on Fridays anytime between 8.30-10pm - see class website. Key Concepts: Lecture 28: Star Clusters and our first steps into the Galaxy Cosmic recycling Stellar Evolution with Star Clusters: Cosmic Clocks Exploration of the Galaxy: first attempts to measure its structure (Hershel, Shapley). The Structure of the Galaxy Our first encounter with Dark Matter Cosmic Recycling • All stellar remnants are much less massive than their parent star – Large amounts of material is ejected from the stars into space • This material is enriched in elements heavier than H and He from stars – We and the planet we live on are made of the ashes of dead stars • This material is used in subsequent generations of stars + planetary nebulae Stellar Evolution with Star Clusters All stars are the same age in a cluster (if cluster forms in one single event). They are also at about the same distance from us. So by
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This note was uploaded on 09/07/2011 for the course AST 1002 taught by Professor Dr.haywoodsmith,jr during the Spring '07 term at University of Florida.

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lecture_tan28 - 1. 2. 3. 4. 5. 6. 7. 8. Admin. 3/29/11...

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