Astronomy 10 11.27.06 - Astronomy 10 Active Galaxies...

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Astronomy 10 Active Galaxies Continued 11/27/06 Everything in this topic is the result of a super massive black holes Active Galaxies started out as three different issues o Galactic Astronomers in the 1940s Carl Seyfert Interested in spiral galaxies Seyfert Galaxies o Had very bright nuclei o The bright nuclei were blue o These nuclei were odd because they were population II o He published an article about these galaxies o Variable-Star Astronomers in the 1920s BL Lacertae Was thought to be an irregular variable star Can argue that they are the most important because they do not follow nature Never showed any regularity; everything that it did was a total surprise In the 1970s, giant telescopes came to play Some graduate students drew an assignment to get the spectra of a list of irregular variable stars o A lot of stars became understandable with the spectra o BL Lacertae was different It was irregular and blurry Didn’t look like any of the other irregular
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This note was uploaded on 04/01/2008 for the course ASTRO 10 taught by Professor Norm during the Fall '06 term at University of California, Berkeley.

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Astronomy 10 11.27.06 - Astronomy 10 Active Galaxies...

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