Lyman alpha has long been used as a signpost of young galaxies in the distant Universe. I will describe some recent results based on two ongoing searches for Lyman alpha emission at "low"-redshift (z~2) for Lyman alpha "blobs" (giant, 100-kpc clouds of glowing, galaxy-forming gas) and lower mass Lyman alpha emitters, which may be the building blocks of larger galaxies. I will also report on our discovery of a strong HeII emitting Lya blob, which may be the first case of an extremely low-metallicity galaxy forming environment. Finally, I will talk briefly about the BigBOSS project, which is a cost-effective dark energy project for this decade.
January 20, 2012
11:00 am
Array Operations Center Auditorium
All NRAO employees are invited to attend via video, available in Charlottesville Room 230, Green Bank Room 137 and Tucson N525.
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