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Our Galaxy in Context: Exploring Satellite Galaxies Around Galactic Analogs

September 25, 2024
4:05 PM - 5:05 PM
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Pupin 1402

Colloquium by Marla Geha, Yale

The Milky Way's satellite galaxies provide critical clues to how low mass galaxies form and the nature of dark matter. Yet the Milky Way itself is a single realization of a Milky Way-mass galaxy halo. I will summarize the main results of the Satellites Around Galactic Analogs (SAGA) Survey, a major spectroscopic effort to characterize the satellite galaxy population around Milky Way-mass galaxies. The SAGA Survey identified 378 satellites across 101 systems. I will discuss SAGA Survey results on the quenched fraction of satellites, luminosity functions, radial distributions, star-formation properties and more.

Followed by wine and cheese.

Host: Kathryn Johnston