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Astronomy Colloquium
The dark side of massive galaxies and new light with JWST
Date: Thursday, October 6th
Time: 3:30 pm
Place: 4421 Sterling Hall, Or via zoom
Speaker: Christina Williams, NOAO
Abstract: Our most powerful telescopes have glimpsed galaxies in their early growth phase only a few billion years after the Big Bang. Surprisingly, galaxy surveys show that the most massive galaxies in the Universe were formed the earliest in cosmic time, in extreme but short-lived bursts of star-formation. I will discuss my research into the unknown astrophysics that drives, and abruptly ends, the extreme lives of massive galaxies. By integrating uniquely deep ALMA and optical/infrared imaging, I will present new insights into the growth rates and gas reservoirs of both quiescent and dusty star-forming massive galaxies during their early evolution. This research will soon take a leap forward using JWST, which will unveil the hidden astrophysics of early galaxy growth with the deepest infrared imaging and spectroscopy ever taken. I will conclude with an overview of two galaxy surveys I will co-lead during the first year of JWST and forcast how they will contribute to outstanding questions about the life cycle of massive galaxies.
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