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Analyzing Globular Clusters

Analyzing Globular Clusters. Minyoung Jang Elise Pasoreck Shankar Iyer. A Sample Hertzsprung-Russell Diagram. M13—V Filter Image. M13—B Filter Image. T(kK) = (12.88)( CI + 1) -1.61 kiloKelvins t avg (years) = (3.9801 x 10 28 )T -4.93 years Range: 926 million – 5.44 billion.

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Analyzing Globular Clusters

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  1. Analyzing Globular Clusters Minyoung JangElise Pasoreck Shankar Iyer

  2. A Sample Hertzsprung-Russell Diagram

  3. M13—V Filter Image M13—B Filter Image

  4. T(kK) = (12.88)(CI + 1)-1.61 kiloKelvins tavg(years) = (3.9801 x 1028)T-4.93 years Range: 926 million – 5.44 billion TwinJet Nebula

  5. Jedi Masters

  6. Pluto and the Cosmological Constant Doug Swanson, Sheila Prakash, Vicky Lent

  7. History of the Cosmological Constant • Concept developed in 1917 by Einstein to make the universe static • Cosmological constant (Λ) initially negative • Discarded in 1929 after Hubble discovered the red shift of distant galaxies • However, recent evidence indicates Λ may exist, but with positive value

  8. Every object in the universe should be affected by Λ • Since Pluto is the farthest easily measured object from the Sun, we chose it to observe

  9. Procedure • Took 4 exposures of Pluto from 7/31 to 8/6 • Aligned pictures with imaging software • Measured Pluto’s linear and angular velocity (ω) • Calculated upper limit for cosmological constant Λ < 8.51 x 10-62 rad2/kg

  10. Crescent Nebula

  11. Project Vega What elements are in the star? Abigail Huang Gary Yen

  12. Self Guided Spectrometer Pick up your diffraction gratings!

  13. Spectra!

  14. Vega Spectrum

  15. Wavelengths of Spectral Lines Total Error: -4.48%

  16. Project Vega • Successful collection of spectrum • -4.48% error of lines • Vega – H(I), Ca, Fe(II),O2 Horsehead Nebula

  17. Cone Nebula

  18. Mark Saigh Chang Kim

  19. What is a Quasar? • A Type of Active Galaxy • Powered by Supermassive Black Hole

  20. Can You Identify the Quasar in This Field of View? (Fuhgetaboutit!)

  21. How to Identify a Quasar Look for a Redshift

  22. How to Identify a Quasar(continued) • Broad Emission Lines • Few Absorption Lines

  23. 3C345: Our Quasar You may notice that 3C345 is quite atypical, not onlyin its brightness, but also in its appearance:

  24. Quasar 3C345 Right Ascension: 16h 42´58´ Variable Magnitude of 15 to 17 Declination: +39º 48´36" Detected Redshift: 0.595 39º 48´36"

  25. Obtained Spectral Data Spectral Lines of Quasar 3C345 Compared to That of Mercury Wavelength vs. Intensity Spectral Graph

  26. Analysis • Broad Absorption Lines • Not Comparable to a Typical Quasar Spectrum • Not Stellar in Nature • A Galactic Object or an Atypical Quasar

  27. Conclusion • High Magnitude and Low Redshift: Relatively Close to Earth Not as Old as Typical Quasar • Might Mean 3C345 is in Process of Evolving into Active Galaxy

  28. Conclusions • Age of the Milky Way ≈ 5.44 billion years • Λ < 8.51 x 10-62 rad2 / kg • Vega is composed of: H(I), Ca, Fe(II), O2 • Quasar 3C345 is evolving into an active galaxy.

  29. Acknowledgements We would like to thank the following institutions and people for enabling us to conduct this research: The State of New Jersey Drew University Dr. David Miyamoto Dr. Keith Andrew Karen Mooney

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