Galaxy Quenching in the High-Redshift Universe

Clay Fellowship Lecture
Thursday, September 10, 2020 -
4:00pm to 5:00pm
Phillips Auditorium
Center for Astrophysics | Harvard & Smithsonian

The most massive galaxies were the first to form and the first to shut off their star formation, turning into quiescent systems when the universe was still young. Such quenching of star formation is a fundamental yet poorly understood aspect of galaxy evolution. I will present recent studies of the stellar, ionized gas, and molecular gas content of high-redshift quiescent galaxies, based on observations ranging from optical to submillimeter wavelengths. These results suggest that the quenching mechanism in place in the early universe may be qualitatively different from that experienced by local galaxies.

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