1. What is this? PH1600: Introductory Astronomy Lecture 15: Star Clusters

2. PH1600: Introductory Astronomy Lecture 15: Star Clusters Study: Chapter 11 in The Cosmos book Next Lecture: Star Death & Black Holes School: Michigan Technological University Professor: Robert Nemiroff Book: The Cosmos by Pasachoff & Filippenko Online Course WebCT pages: http://courses.mtu.edu/ This class can be taken online ONLY, class attendance is not required!

3. You are responsible for…  Reading the book One chapter per “quiz period” Anything from that chapter can appear on quizzes or tests, even if I never mention them during my lecture(s) This quiz period covers Chapter 11  APODs posted during the semester APOD review every week during lecture  Completing the Quizzes Chapter 1, 2, 4, 6, 7, 8, &10 quizzes already due Chapter 11 quiz due next See WebCT at http://courses.mtu.edu/ for detailshttp://courses.mtu.edu/

4. Andromeda Nebula: Var! Credit: Mount Wilson Observatory Historical Archive APOD: 1996 April 6

5. The Cepheids of M100 Credit: NASA, HST, W. Freedman (CIW), R. Kennicutt (U. Arizona), J. Mould (ANU) APOD: 1996 January 10

6. Open Clusters  Young < 1 billion years Light dominated by biggest blue stars  10 – 1,000 stars  Found in Galactic Plane  All stars born at the same time All stars at the same distance

7. M45: The Pleiades Star Cluster Credit & Copyright: Robert Gendler APOD: 2006 January 9

8. Perseid Fireball Over Japan Credit & Copyright: Katsuhiro Mouri & Shuji Kobayashi (Nagoya City Science Museum / Planetarium) APOD: 2004 August 13

9. Open Cluster NGC 290: A Stellar Jewel Box Credit: ESA & NASA; Acknowledgement: E. Olszewski (U. Arizona) HST APOD: 2006 May 1

10. The M7 Open Star Cluster in Scorpius Credit & Copyright: Allan Cook & Adam Block, NOAO, AURA, NSF APOD: 2005 April 6

11. http://en.wikipedia.org/wiki/Image:Open_cluster_HR_diagram_ages.gif

12. In the Center of the Trapezium Credit: J. Bally, D. Devine, & R. Sutherland, D. Johnson (CITA), HST, NASA APOD: 2005 July 10

13. Star Clusters Young and Old Credit & Copyright: Chris Hetlage APOD: 2006 September 10

14. Open Star Clusters M35 and NGC 2158 Credit & Copyright: Canada-France-Hawaii Telescope, J.-C. Cuillandre (CFHT), Coelum APOD: 2003 December 15

15. A Star Cluster in Motion Credit: Adam Block (NOAO) APOD: 2002 July 30

16. The Rosette Nebula in Hydrogen, Oxygen, and Sulfur Credit: T. A. Rector, B. Wolpa, M. Hanna (AURA/NOAO/NSF) APOD: 2000 January 11

17. Inside the Eagle Nebula Credit & Copyright: T. A. Rector & B. A. Wolpa, NOAO, AURA APOD: 2006 February 26

18. Globular Clusters  Oldest things known in the universe  10,000 – 1 million stars  All born at the same time All have the same distance All are relatively dim  Not confined to our Galactic Plane  Blue stragglers once a mystery

19. The Colorful Clouds of Rho Ophiuchi Credit & Copyright: Jim Misti and Steve Mazlin, (acquisition), Robert Gendler (processing) APOD: 2006 July 14

20. Globular Cluster M3 from WIYN Credit & Copyright: S. Kafka & K. Honeycutt (Indiana University), WIYN, NOAO, NSF APOD: 2006 March 12

21. M3: Inconstant Star Cluster Credit & Copyright: J. Hartman & K. Stanek (Harvard CfA) APOD: 2004 October 12

22. M13: The Great Globular Cluster in Hercules Credit & Copyright: Eddie Guscott APOD: 2004 May 11

23. Blue Stragglers in NGC 6397 Credit: Hubble Heritage Team (STScI / AURA), A. Cool (SFSU) et al., NASA APOD: 2003 August 8

24. NGC 1818: A Young Globular Cluster Credit: Diedre Hunter (Lowell Obs.) et al., HST, NASA APOD: 2002 December 29

25. M55: Color Magnitude Diagram B.J. Mochejska, J. Kaluzny (CAMK), 1m Swope Telescope APOD: 2001 February 23

26. The Sombrero Galaxy from HST Credit: Hubble Heritage Team (AURA/STScI /NASA) APOD: 2006 January 15

27. M13: The Great Globular Cluster in Hercules Credit & Copyright: Eddie Guscott APOD: 2004 May 11