Princeton University Astronomy Colloquium
Where Did Half the Starlight in the Universe Go?
We believe that approximately half of all the light from stars is absorbed
and reprocessed by dust. The resulting emission is grey body with a
temperature near 30 Kelvin. The COBE satellite made the first measurements
of the resulting Far Infrared Background (FIRB), but since that time, we
have been unable to resolve the background into individual galaxies. The
Balloon-borne Large Aperture Submillimeter Telescope (BLAST) was designed to
do this job. Its three bands at 250, 350, and 500 microns span the peak in
emission for galaxies at z=1. I will discuss the BLAST experiment and
present results from our measurements of resolved and unresolved galaxies.
Date & Time
February 10, 2009 | 4:30pm
Location
Peyton Hall AuditoriumSpeakers
Mark Devlin
Affiliation
University of Pennsylvania