Active Galactic NucleiKayla 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

Radio Galaxies•Elliptical Galaxies

•Radio Emissions

•Source of long thin jets

http://imagine.gsfc.nasa.gov/docs/science/know_l2/active_galaxies.html

Seyfert Galaxies•Spiral Galaxies

•Visible Light Emissions

Quasars•Most extreme form of galactic nuclei.

•Less luminous than AGNs.•More common billions of years ago.

Starburst Galaxies•Doesn’t produce more luminosity than rest of galaxy.

•Formed by collisions with other galaxies.

•Star forming regions.

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

Blazars•Subtype of AGN that jet points to observer

•Emit large frequencies from radio to gamma.

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

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

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