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Physics and Astronomy

Physics & Astronomy Colloquium

3:30 PM, Friday, February 26, 2010
Room 155, Chem-Phys Building

Dr. Brian R. Kent
National Radio Astronomy Observatory

"Gas in Nearby Galaxies: From Our Galaxy to the Virgo Cluster''

Large surveys are cataloging the neutral gas content of galaxies in the local Universe across the electromagnetic spectrum. In particular, the wide-field Arecibo Legacy Fast ALFA survey (ALFALFA) is making use of the 21 cm line of neutral hydrogen to measure the properties of over 20,000 galaxies in the local Universe. The survey bandpass and sky footprint samples a variety of environments, including the nearby Virgo Cluster and our own Milky Way Galaxy. The HI data complements existing databases with information on the luminous stellar and molecular content of the various morphological populations in the cluster. I will discuss the survey strategy and recent science results both with Arecibo and other followup instruments.

Refreshments will be served in CP 179 at 3:15 PM