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Active Galactic Nuclei

Active Galactic Nuclei. Kayla Young. Knowledge Base: What are AGNs. Compact center of Galaxy More Luminous than galaxy as a whole Major types of AGNs include Radio Galaxies Seyfert Glaxies BL Lac Starburst Quasars are closely related to AGNs. AGNs. Knowledge Base: Structure of AGN.

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Active Galactic Nuclei

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  1. Active Galactic Nuclei Kayla Young

  2. Knowledge Base: What are AGNs • Compact center of Galaxy • More Luminous than galaxy as a whole • Major types of AGNs include • Radio Galaxies • SeyfertGlaxies • BL Lac • Starburst • Quasars are closely related to AGNs

  3. AGNs

  4. Knowledge Base: Structure of AGN

  5. Radio Galaxies • Elliptical Galaxies • Radio Emissions • Source of long thin jets http://imagine.gsfc.nasa.gov/docs/science/know_l2/active_galaxies.html

  6. Seyfert Galaxies • Spiral Galaxies • Visible Light Emissions

  7. Quasars • Most extreme form of galactic nuclei. • Less luminous than AGNs. • More common billions of years ago.

  8. Starburst Galaxies • Doesn’t produce more luminosity than rest of galaxy. • Formed by collisions with other galaxies. • Star forming regions.

  9. BL Lac Object • Originally considered variable stars • Closely related to quasars • Blazars

  10. Blazars • Subtype of AGN that jet points to observer • Emit large amounts of radio to gamma.

  11. Literature Review: Project Techniques • Gorijan et al create Color Magnitude Diagrams of AGN to analyze new data. • Johnson et al studied chemical compositions of the winds inside of AGNs

  12. Literature Review: Project Ideas • Etchencamp et a in 2006 studied AGNs in Starburst galaxies as well as Radio Galaxies by analyzing spectra. • Croton et al simulated lifecycles and growth of AGNs over time using archival data to thoroughly study each object

  13. Bibliography • Gorjian, Varoujan, Mark Abajian, Kate Meredith, Helen Petach, Elizabeth Ramseyer, and Tim Spuck. "NITARP Proposal 2010- Color Magnitude Relationships in Nearby Active Galactic Nuclei." (2010). Web. • Alexandra JW Echtenkamp. "Radio and Starburst Galaxies." RBSE Journal 2 (2008). Web. • Sarah Johnson. "MgII and CIII] in Active Galactic Nuclei." RBSE Journal 2 (2008). Web. •  Hester, John Jeffrey. 21st Century Astronomy. New York: W.W. Norton, 2007. 538-41. Print. • Dr. Jim Lochner, “Active Galactic Nuclei and Quasars” nasa.gov

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