320 likes | 334 Views
Analyzing globular clusters, the Hertzsprung-Russell Diagram, TwinJet Nebula, and the history of the cosmological constant concept crafted by Einstein. Observing Pluto, the Crescent Nebula project, Project Vega with elements in stars, Horsehead Nebula, Cone Nebula, and quasar identification methods.
E N D
Analyzing Globular Clusters Minyoung JangElise Pasoreck Shankar Iyer
M13—V Filter Image M13—B Filter Image
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
Pluto and the Cosmological Constant Doug Swanson, Sheila Prakash, Vicky Lent
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
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
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
Project Vega What elements are in the star? Abigail Huang Gary Yen
Self Guided Spectrometer Pick up your diffraction gratings!
Wavelengths of Spectral Lines Total Error: -4.48%
Project Vega • Successful collection of spectrum • -4.48% error of lines • Vega – H(I), Ca, Fe(II),O2 Horsehead Nebula
Mark Saigh Chang Kim
What is a Quasar? • A Type of Active Galaxy • Powered by Supermassive Black Hole
Can You Identify the Quasar in This Field of View? (Fuhgetaboutit!)
How to Identify a Quasar Look for a Redshift
How to Identify a Quasar(continued) • Broad Emission Lines • Few Absorption Lines
3C345: Our Quasar You may notice that 3C345 is quite atypical, not onlyin its brightness, but also in its appearance:
Quasar 3C345 Right Ascension: 16h 42´58´ Variable Magnitude of 15 to 17 Declination: +39º 48´36" Detected Redshift: 0.595 39º 48´36"
Obtained Spectral Data Spectral Lines of Quasar 3C345 Compared to That of Mercury Wavelength vs. Intensity Spectral Graph
Analysis • Broad Absorption Lines • Not Comparable to a Typical Quasar Spectrum • Not Stellar in Nature • A Galactic Object or an Atypical Quasar
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
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.
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