Galaxies in the ultraviolet
Ultraviolet astronomy is still in its infancy. Exciting progress has recently been made with the completion of a comprehensive survey by a NASA satellite called the Galaxy Evolution Explorer (GALEX) which carries a 0.5-m ultraviolet telescope. Totally unanticipated results have emerged from this survey. They include the discovery of star formation occurring in the outlying regions of distant galaxies, and an object in our own Milky Way that stretches several degrees across across the sky but can be seen only in the far ultraviolet. Previously unpublished images of the sky, and especially the extragalactic Universe, will be discussed and presented in this talk for the first time.
About Barry Madore
Barry Madore is a Senior Research Astronomer at the Observatories of the Carnegie Institution of Washington, based in Pasadena, California. He is also the Lead Scientist on the NASA Extragalactic Database (NED) which he co-founded 25 years ago. Dr Madore was a founding member of the Hubble Space Telescope Key Project Team that in 2001 determined the expansion rate of the Universe to 10%, ending a century-long controversy. He is also a co-investigator on the Galaxy Evolution Explorer (GALEX) satellite. His current scientific interests concern observational aspects of star formation, the extragalactic distance scale, peculiar galaxies and variable stars. Most recently he has been exploring the limits to knowledge in cosmology.