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Showing posts with label Starburst. Show all posts
Showing posts with label Starburst. Show all posts

Tuesday, June 5, 2012

Galaxies


A wide-ranging malaria program of imaging and spectroscopy of galaxies by Spitzer will conduct, from the closest to the Milky Way to those found in the limits of the observable universe.
Ultra luminous Infrared Galaxies (ULIRGs)
The satellite IRAS discovered a class of ultra luminous galaxies that radiate more than 90% of infrared light. Studies show that optical and infrared most of these objects are in systems of galaxies in collision or interaction. The study of the nature of ULIRGs and their relation to active galaxies (see next paragraph) is one of the most important problems in astrophysics.