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OPEN STAR CLUSTER M11

OPEN STAR CLUSTER M11

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OPEN STAR CLUSTER M11

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  1. OPEN STAR CLUSTER M11 Rosalina Bonilla Jennifer Hsieh Mary Lou Juanatas Cluster 7: Stars, Sight, and Science

  2. OUTLINE • Background of Star Clusters • Description of project • Messier 11 • Ideal Gas Law • Star Formation • Stellar Evolution • Observation & data collection of M11 • Data analysis • Results & conclusions

  3. What are open star clusters? • Group of stars born at the same time • Cluster contains Hot Young stars • Found in the disk of spiral galaxies • Metallicity – how much heavy elements are in the object • Open cluster have lots of metals

  4. MAIN OBJECTIVES • How old is M11? • How do we know? • Why does it matter?

  5. Fun Facts about M11 • Nick Name: The Wild Duck Cluster • One of the richest and most compact of open cluster • Discovered in 1681 by Gottfriend Kirch • 3000 stars

  6. Ideal Gas Law • P= pressure • V= volume • n= number of particles • T= temperature • R= gas constant • P V= n RT

  7. Star Formation • Protostar – dust and gas collapses under gravity • Pressure balances the forces of gravity • Molecules in the protostar radiate allowing it to shrink

  8. Stellar Structure/Evolution • Main sequence – hydrogen fuses into helium in the core • Red giants swell up, causing the outer layers to cool which makes them red • This happens when the core runs out of hydrogen

  9. OBSERVATION

  10. DATA ANALYSIS

  11. CONCLUSION • M11 is 90 million years old with an ± of 10 million years • Using the isoplot program we estimated the age of our M11 • Open star clusters help us determine the metallicity of our universe • The metalllicity of the universe is important because we’re made of metals

  12. ACKNOWLEDGEMENTS • Advisors • Jason Melbourne • Nick Konidaris • Vision Science • Gabriel, Gene, Jason P., Jim, Joy, & Maribell • Astronomy • David, Elinor, Jason, Lynne, Marla, Nick, Scott Sea., Scott Sev. • Teacher Fellow / Sci. Comm. • Gary / Pascha

  13. REFERENCES • WWW.ANTWRP.GFSC.NASA.GOV • Http://antwrp.gsfc.nasa.gov/apod/astropix.html (Astronomy Pic. of the Day) • Http://mthamilton.ucolick.org/ (Lick observatory) • www.tcho.la.asu.edu/ • www.soral.as.arizona.edu/ • www.ctio.noao.edu/ • www.star.le.ac.uk/ • www.physics.nwu.edu/

  14. QUESTIONS?????